Bounty hunt stages (Also commonly called "Sushiman" stages) are stages you can run daily and provide you with character upgrade materials such as BD discs, skill books, and ooparts. Two tickets for each stage are given out daily but buying the monthly and half monthly packages will give you an additional 2 and 1 ticket for each stage respectively. You can also buy extra tickets for each stage in the Shop.
Each table displays the drop quantity and the chance of getting said quantity. The drop rates of tier 4 BDs are notably low, so farming them via Schedule is recommended.
Upon clearing a stage, bounty hunt coins will drop depending on the stage completed (1 coin for clearing Stage A, 2 for Stage B, 3 for Stage C, etc.). These coins can be spent via the shop on the main menu of bounty hunts. In the shop, there are BDs and skill books each from 2 schools as well as 2 types of ooparts. The available quantity and price of those items are as follows:
Type
T1
T2
T3
T4
Qty
Price
Qty
Price
Qty
Price
Qty
Price
BDs
15
80
8
160
4
400
2
800
Skill Books
20
24
10
40
7
80
4
200
Ooparts
25
24
15
40
8
80
5
200
Bounty hunts also have a school bonus system where bringing characters from certain schools gives your students bonus damage.