In Search of a Hidden Heritage ~ Trinity's Extracurricular Activities ~ is the 28th event in Blue Archive featuring Ui, Hinata, Hanako, and Koharu.

This event has a rerun version, refer to In Search of a Hidden Heritage ~ Trinity's Extracurricular Activities ~/Rerun for details on the rerun version.

Event Notice[edit]

Event Summary[edit]

Schedule[edit]

Japanese Version[edit]

Japanese name	隠されし遺産を求めて～トリニティの課外活動～
English name	In Search of a Hidden Heritage ~ Trinity's Extracurricular Activities ~
Event period	07/24/2023 11:00 — 08/09/2023 10:59
Reward exchange	07/24/2023 11:00 — 08/16/2023 10:59

Global Version[edit]

English name	Trinity Extracurriculars: In Search of Hidden Ruins
Event period	01/30/2024 11:00 — 02/15/2024 10:59
Reward exchange	01/30/2024 11:00 — 02/22/2024 10:59

During the event period, there will be different banner happening on certain days.
- New Limited Banner: Ui (Swimsuit) (★★★) and Hinata (Swimsuit) (★★★), banner will run for 7 days. There will be a free 100x pull for this banner.
- New Limited Banner: Hanako (Swimsuit) (★★★), banner will run for 7 days. This is the Anniversary Banner with double rate up. In addition, Limited characters Wakamo, Hoshino (Swimsuit), and Mika will also be included in this banner.
- Rerun Limited Banner: Wakamo (★★★), is a rerun limited banner that runs on the same days as the Anniversary banner.
New Event Limited Character: Koharu (Swimsuit) (★)
Player must have completed Area 2-3 to participate.

Details[edit]

Event Summary:

New Limited-time minigame. This minigame works like a Tabletop RPG where players can move around the map, search for treasures, and encounter various events by using Event Points. The outcome of the encounter will be determined by a dice roll.
Achievement Missions, Exchange Shop, and Event Points Milestone Rewards will be in this event.
An Extra Challenge Stage will be available after all Challenge Stages have been cleared.
A login web event which rewards the player various items and an image of swimsuit Hanako.

Additional new separate content/updates alongside the Event:

Level Cap raised from 85 to 87.
New Club Emotes Pack. (Same emote that global got in F.SCT Battle Operation)
New OOPArts Golden Thread and Roman Dodecahedron.
Reset the Purchase Status of certain Limited Pyroxene Packs.
Implement the Unique Gear for Wakamo, Mimori, Chise (Swimsuit), Saya (Casual), and Serika.
Implement a new Title System. Players will be able to obtain the Title after meeting certain conditions. Titles can be set via the ID Card Screen and will be displayed in areas such as Club, Friend List, and Raid Ranking.
Pyroxene Packs Update. The quantity of Pyroxenes in certain Packs will increase. A new pack will also be added. The changes are only for the packs with a one-time purchase limit. Click Here for more details (JP).
Shop Changes/Updates:
- Add Filter Function to each Shop.
- Update the Product Lineup for Eligma (Other) and Bounty Shop.
- Increase the purchasable stock of some items in Raid Shop.
- Add Golden Thread and Roman Dodecahedron OOPArts to Joint Firing Drill Shop.
- Izumi (Swimsuit) Eleph are now purchaseble in Expert Permit shop (After the shop refresh in 1st of August).
Other Changes/Updates:
- New Furniture Set: Sunshine Resort.
- Add Sort By to some filter functions.
- Add new types of voices to the in-game Student Voice List.
- Change the Rate for the Tutorial Pull from 2.5% to 3%.
- Increase the EXP Report drop amount for all Commission Stages (A ~ L).
- Improve the Filter Function on the Student List Screen. Players can now filter students by their Attack-Color-Type, Defense-Color-Type, and Role-Type.
Announce a new upcoming Raid Boss, Wakamo (Hovercraft). No other details at the time of event.
Add Catch in Neverland to the Permanent Event Archive after the event period is over.
- There won't be a Quest or Challenge stage nor an exchange shop.
- You can only read the story from clearing story stage. Each story stage will cost 10 AP.
- You can obtain the event-limited character from those events by clearing story 01.

Minigame[edit]

In this event, players can use Event Points to play in the new Limited-time Minigame. This minigame works like a Tabletop RPG where players can move around the map, search for treasures, and encounter various events in an exploration area. The outcome of the encounter will be determined by a dice roll.

Photo Gallery
Stone Labyrinth Cleared!
Hinata: "Did everyone get out safely? Wonderful"
Koharu: "...An escape room?"
Catacombs Cleared!
Ui: "Oh, oh... This...!"
Hanako: "You're extra fired up today, Ui. Heehee..."
Abandoned Lemon Grove Cleared
Hinata: "Shall I gather some to share?"
Koharu: "Um... Am I supposed to grab some, too?"
Forgotten Lighthouse Cleared!
Hanako: "Look, Ui! See what that cheeky wind keeps doing to my clothes...?"
Ui: "I can't hear you, I can't hear you, I can't hear you!"
Waterfall Hideout Cleared!
Hanako: "■■!■■!■■■■!■■!!♡"
Koharu: "Keep it down! Death penalty! You'll get the death penalty!"
Island Interior Cleared!
Ui: "This must have been very special to someone..."
Hinata: "And now it's ours!"
Moving...
Hanako: "It's like we're on a picnic!♡"
Ui: "Huff... Huff... S-Slow down..."

There are a total of 4 areas that players can explore, as well as 2 hidden areas in each round.
This minigame is played in rounds. Hidden Area 1 can be unlocked from Round 1, and Hidden Area 2 can only be unlocked from Round 2.
Sweeping will be available once players reach Round 3. Area 2 requires 1500Event Points to sweep, and 1200Event Points for other areas.
There are three Treasure Chests in each area. Only 1 of them is a Special Treasure Chest that will give players the full rewards and the option to move to the next area. The location of the treasure chests is fixed, but the special treasure chest positions are random.
Some Memories Collection can be obtained after clearing the hidden area for the first time.
Once players move to the next area, they will not be able to return to the previous area.

Progression Tips[edit]

For Round 1 and 2, move toward the Treasure Chest via the shortest route and avoid any Enemy tiles if possible. Try to get at least the 8-Sided dice before moving to Area 3, since the total roll value required there will be quite high.
It is recommended to step on the tile with Facility object since it gives Exclusive Item without having to roll a die. Useful in early maps.
Keep at least one item slot free because new items will be immediately discarded if there are no slots available.
Sweep efficiency is actually quite good, and it is recommended to start sweeping as soon as you reach Round 3. The sweep button is near the top right and easy to miss at first glance, so be sure to pay attention.
Manual play is not recommended for farming as it is heavily RNG and will likely cost more than sweeping if the Object location spawns badly.
Make sure to clear Hidden Area 1 (Lemon Farm) in Round 1 and Hidden Area 2 (Waterfall Cave) in Round 2 to unlock the CG collection. The condition are as below:
- Lemon Farm unlock condition: At round 1 or above, Step on all the Facility object in Area 2 (Underground Ruins).
- Waterfall Cave unlock condition: At round 2 or above, step on all the Wooden Sign object in Area 4 (Deepest Part of The Island).
Clearing Hidden areas once is enough. Hidden Area only gives 1.5MCredits, and the path there will cost you 1250Event Points, which isn't quite worth the AP spent since there will be 3x Campaign running during this event (JP).

Object[edit]

There are 4 types of object in this minigame. Treasure Chest, Wooden Sign, Facility, and Enemy. Each object play will cost 250Event Points.

Notes: Object play refers to any action of stepping on a Facility or Treasure Chest and rolling dice in Random Event (Wooden Sign) or Enemy.

Object
Icon	Name	Description
	Treasure Chest	There are 2 types of Treasure Chests. Normal Treasure Chest and Special Treasure Chest. Stepping on the Normal Treasure Chest will give 150kCredits. Stepping on the Special Treasure Chest will let players move to the next area and give a fixed reward.
	Wooden Sign	Stepping on the Wooden Sign object will trigger a random encounter event, and players can obtain Credits, Advanced Activity Report, or Exclusive Items.
	Facility	Stepping on the Facility will trigger a random event, and players can obtain an Exclusive Item without having to roll the dice.
	Enemy	There are 2 types of enemies. Minion and Boss. Minion will have 2 HP, while Boss will have 3 HP.

Wooden Sign[edit]

Stepping on the Wooden Sign object will trigger a random encounter event. There are 3 options for each event.
Dice roll will be used to determine if the selected option will be successful or not.
- If successful, players will receive a random reward of either Credits, Advanced Activity Report, or Exclusive Item.
- If not, the encounter ends, and no rewards will be given.
Each option requires a different amount of total roll value and is higher in each Area. Each option give exactly the same 3 types of rewards, just at a different rate.
- Top option will mostly give credits or reports. Rare chance to get Exclusive Items.
- Middle option is the optimal option to go for and will usually give Exclusive Items. Rare chance to get 8-Sided Dice.
- Bottom option has the highest chance of getting items like 8-Sided Dice and 10-Sided Dice but requires the highest total roll value.

Wooden Sign
Area	Name	Success Roll Value
Area	Name	Top Option	Middle Option	Bottom Option
1	Stone Maze	8	13	20
2	Underground Ruins	10	16	20
3	Forgotten Lighthouse	12	18	24
4	Deepest Part of The Island	15	20	24

Enemy[edit]

There are 2 types of enemies. Minion and Boss. Minion will have 2 HP, while Boss will have 3 HP. Combat starts when players move to the Enemy tile. 250Event Points will be consumed every turn.

Players can choose to Run or Fight the enemy in the 1st turn.
Choosing Run will require an 8 total roll value to succeed. Running will not remove the enemy object from the field.
Choosing Fight will require a different total roll value depending on the enemy type and area. Rolling a Success value deals 1 Damage. Rolling a Great Success value deals 2 Damage.
- Enemy will counterattack for 1 Damage in their turn if they are not defeated or the roll fails.
- Defeating the enemy will guarantee an Exclusive Item drop. The drop can be seen at the bottom left of the battle screen.
- The Exclusive Item drop will change after players choose to escape and challenge the enemy again.
If players HP reaches 0, they will need to Recover before they can continue to take any action. This will cost 600Event Points and restore HP to full.
Escape option will be available in the 2nd turn. This option is guaranteed and will not cost any points and Enemy remaining HP will remain the same after escaping.

Wooden Sign
Area	Name	Minion		Boss
Area	Name	Success	Great Success	Success	Great Success
1	Stone Maze	11	15	12	16
2	Underground Ruins	13	17	14	18
3	Forgotten Lighthouse	16	20	18	22
4	Deepest Part of The Island	17	21	19	24

Exclusive Item[edit]

Players will start with a 6-Sided Dice. Getting the higher dice will replace the lower dice.
There are 8 types of Exclusive items in this minigame.
There are 4 item slots. If there are no slots available, the new item will immediately be discarded, so make sure to have at least one slot available at all times.
When obtaining an exclusive item, the number of uses and effects will be slightly random.
Using the same type of item will override the current one.
Items with effects that last for X object play will have their uses reduced by stepping on facilities even if players aren't rolling die or attacking any enemies.
- Ex: Peroro Doll, which grants effects that block incoming attacks for 3-object play. Stepping on a Facility or Treasure Chest will still reduce its uses by 1.
Items that are currently in use and still have remaining uses (Freedom Marker, Freedom Dice, Peroro Doll, and Lemon Drink) can be transferred to the next round. The total number of items that can be transferred will increase with each round.

Exclusive Item
Icon	Name	Effect	Flavor Text
	8-Sided Dice	A die that can roll from 1 to 8.
	10-Sided Dice	A die that can roll from 1 to 10. (10-Sided Dice cannot be obtained before 8-Sided Dice)
	Instant Lemon Juice	Restore the HP gauge by X amount.	レモンを搾った汁。すっぱい。
	Lemon Drink	Increase the total HP gauge by X amount.	レモンを精製して作ったドリンク。おいしい！
	Peroro Doll	Block an incoming attack for X object play.	ペロロ人形に視線を逸らせる！
	Treasure Detector	Indicated the position of the Special Treasure Chest.	原理のわからない不思議な機械！
	Freedom Marker	Add X value to the total roll value for Y object play.	これは完全にインチキじゃないですか？
	Freedom Dice	All dice roll X value for Y object play.	これはもうチートじゃん！
	Permanent Marker event rerun only	Permanently add X to the total roll value until game round is over.	あれ、これ消えないんですけど？

Area Reward[edit]

Object will spawn in random location each round. Only the treasure chest location will be fixed. Special treasure chest position is also random.
Rewards from the Special Treasure Chest are fixed. Round 4 onward will have the rewards reduced by about half of what they were in Rounds 1–3.
There are two hidden areas. Lemon Farm can be found in Area 2 (Underground Ruins), and Waterfall Cave can be found in Area 4 (Deepest Part of The Island).
- Lemon Farm unlock condition: At round 1 or above, Step on all the Facility object in Area 2 (Underground Ruins).
- Waterfall Cave unlock condition: At round 2 or above, step on all the Wooden Sign object in Area 4 (Deepest Part of The Island).
Each hidden area will have 4 Wooden Sign and 1 Treasure Chest, and it is necessary to step on all of the wooden signs to go to the treasure chest.
- Lemon Farm Success Roll Value is the same as Area 2 (Underground Ruins).
- Waterfall Cave Success Roll Value is the same as Area 4 (Deepest Part of the Island).

Area Reward
Area	Name	Special Treasure Chest Reward
Area	Name	Round 1-3	Round 4+
1	Stone Maze	2M20T16T24T32T410	1M4T13T22T31T45
2	Underground Ruins	2M20T16T24T32T410	1M4T13T22T31T45
3	Forgotten Lighthouse	2M20T16T24T32T410	1M4T13T22T31T45
4	Deepest Part of The Island	2M20T16T24T32T410	1M4T13T22T31T45

Characters[edit]

Bonus Units
Event Item	Bonus Rate	Striker	Special	Max Bonus Rate
Event Points	25%	Ui (Swimsuit) Koharu (Swimsuit)	Hinata (Swimsuit)	135%
	20%	Ui Hinata Koharu	Hanako
	15%	Hanako (Swimsuit) Sakurako Mari (Sportswear)	Shimiko Mari
	10%	Natsu Kazusa Suzumi Serina (Christmas) Mika Tsurugi Reisa Hifumi Azusa Azusa (Swimsuit) Hasumi Hasumi (Sportswear) Mine Tsurugi (Swimsuit)	Yoshimi Airi Mashiro Mashiro (Swimsuit) Serina Nagisa Hanae Hanae (Christmas) Hifumi (Swimsuit)
Parchment Piece	25%	Koharu (Swimsuit)		100%
Parchment Piece	15%	Hanako (Swimsuit) Mari (Sportswear) Natsu Serina (Christmas) Tsurugi Reisa Azusa Hasumi (Sportswear)	Hanako Shimiko Mashiro	100%
Lemon	25%	Ui (Swimsuit)		100%
Lemon	15%	Ui Sakurako Kazusa Hifumi Azusa (Swimsuit) Mine	Yoshimi Mashiro (Swimsuit) Nagisa Hanae	100%
Old Key	25%		Hinata (Swimsuit)	100%
Old Key	15%	Hinata Koharu Suzumi Mika Hasumi Tsurugi (Swimsuit)	Mari Airi Serina Hanae (Christmas) Hifumi (Swimsuit)	100%

Stage Info[edit]

Story Stages[edit]

	Stage	Level	Entry cost	Environment	Enemy armor	Rewards
	Stage	Level	Entry cost	Environment	Enemy armor	FirstClear	Event
1	Story 1	10	10	Outdoors	Light	20 Koharu (Swimsuit) 5050	1
2	Story 2	11	10	Outdoors	Light	205050	1
3	Story 3	12	10	Outdoors	Elastic	205050	1
4	Story 4	13	10	Outdoors	Elastic	205050	1
5	Story 5	14	10	Outdoors	Light	205050	1
6	Story 6	15	10	Outdoors	Elastic	205050	1
7	Story 7	16	10	Outdoors	Light	205050	1
8	Story 8	17	10	Outdoors	Elastic	205050	1
9	Story 9	18	10	Outdoors	Elastic	205050	1
10	Story 10	20	10	Outdoors	Light	205050	1

Quest Stages[edit]

	Stage	Level	Entry cost	Environment	Enemy armor	Rewards
	Stage	Level	Entry cost	Environment	Enemy armor	FirstClear	ThreeStar	Event	Default	Rare
1	Quest 1	23	10	Outdoors	Elastic	100150150	30	317	125%T1115%T2
2	Quest 2	23	10	Outdoors	Heavy	100150150	30	317	125%T1115%T2
3	Quest 3	23	10	Outdoors	Light	100150150	30	317	125%T1115%T2
4	Quest 4	23	10	Outdoors	Special	100150150150	30	20	125%T1115%T2
5	Quest 5	45	15	Outdoors	Elastic	200300	30	624	125%T2	18%T3
6	Quest 6	45	15	Outdoors	Heavy	200300	30	624	125%T2	18%T3
7	Quest 7	45	15	Outdoors	Light	200300	30	624	125%T2	18%T3
8	Quest 8	45	15	Outdoors	Special	200100100100	30	30	125%T2	18%T3
9	Quest 9	80	20	Outdoors	Elastic	300800	30	931	125%T2112%T3	12.1%T4
10	Quest 10	80	20	Outdoors	Heavy	300800	30	931	125%T2112%T3	12.1%T4
11	Quest 11	80	20	Outdoors	Light	300800	30	931	125%T2112%T3	12.1%T4
12	Quest 12	80	20	Outdoors	Special	300300300300	30	40	125%T2112%T3	12.1%T4

Challenge Stages[edit]

	Stage	Level	Entry cost	Environment	Enemy armor	Rewards
	Stage	Level	Entry cost	Environment	Enemy armor	FirstClear	ThreeStar
1	Challenge 1	50	5	Outdoors	Light Elastic Heavy	70	70
2	Challenge 2	85	5	Outdoors	Light Elastic Heavy	70	70
3	Challenge 3	88	5	Outdoors	Special Elastic	70	70

Clear Team Reference

Gimmick/Tips

Challenge 1: The gimmick of this stage is to attack only the enemy with the ATTACK icon above their heads and never attack the unit with HELP icon above their heads; doing so will antagonize them and they will kill your team instantly. Avoid using any unit with an AoE EX. Also, only the enemy with the ATTACK icon can be killed, and those without will be invincible until that one dies and the icon switches to them.
Challenge 2: No gimmick here. Just have to kill Ui and Koharu. Easy clear by just keeping your DPS unit alive or using Mika.
Challenge 3: The BOSS enemy in this stage is stupidly tanky, and it will be difficult to brute force even with Mika unless you have the right team. Instead, there are blue sweeper enemies, and when they die, they will explode and deal damage to both enemy and ally units in a small range. If allies are hit by the explosion, they will be knocked back. Each sweeper explosion will deal around 19,700 damage to the enemy unit. There will also be a watermelon that spawns occasionally that deals DoT to your ally unit in range. The key to clearing this stage is to reliably kill the sweeper in the BOSS range.

Extra Challenge Stages[edit]

	Stage	Level	Entry cost	Environment	Enemy armor	Rewards
	Stage	Level	Entry cost	Environment	Enemy armor	FirstClear	ThreeStar
Ex	Extra Challenge Ex	88	5	Outdoors	Special	5	5