Hi!

1. The forum is there as a resource and it would help a lot if you took the time to search the forum before looking for answers that have been answered before. Han's mystery only removes buffs that lasts for "x" number of rounds. Han's mystery also does not remove auto and manual field barriers. This means that there is a limit of what buffs Han can be removed and some buffs like healing tips would not be removed.

2. There are now new ways for you to get coupons. For example, group summon can now allow you to earn 80 coupons max for participating in it (this scales with damage). At the moment, there are no plans to change this. However, if you would like to make a suggestion, I highly recommend posting in the correct suggestion thread which can be found here.

3. Hidan is not broken in Jinchuriki treasure so there is nothing to fix. He scales based on his hp and does do damage based on it. There are ways to counter him such as immobile, chaos, etc.

4. Higher initiative does not always lead to higher damage but it definitely can turn the tide. Also, what excels in Arena is not initiative for the most part but the player being able to utilize buffs. If you have initiative though, there is a higher chance your field barrier buff is active, which is 40% extra damage, so yes, you would see a difference in damage due to initiative.

5. Wind main can be countered. Impetus is an annoying mystery but it does not have its own weaknesses. Most players do not put wind main on the front row, so you can easily either interrupt or crowd control wind main so she cannot. Most teams that utilizes impetus, relies on it heavily and shutting down the usage of the mystery is detrimental for most teams. Find teams that work to counter, if you cannot, the community is more than happy to help you out.

~Jib