it's really worth to buy Jonin medal, u just don't know how to use it

- Jonin medals last 180 days and u get 20 coupons per day which mean u can get max 3600 coupons with Jonin medal.
- Jonin +15% buff in 9tails invasion and the more dmg u deal, the more exp and coins u get. Also u will get even more exp once the 9tails is defeated.
- Jonin x2 exp for your main character when u sweep which means 1500x2 every sweep.
- Also 100% exp recovery is good if u are busy
- 200% exp boost is for the other ninjas in your team, not the main character.
- Jonin increase Stamina cap, not a specific amount of stamina.
- And lastly, in my perspective, u get more luck in recruit cards with Jonin medal :))