[Added 2/28] The team is aware of a bug in Chi-Ji event Tasks that require you to have at least a certain number of Mercs of a certain type in your party (such as Tasks 5 and 6). The bug is that the number is checked at the start of the boss encounter for that Bounty, instead of the start of the Bounty. To avoid this bug, keep your mercs healthy enough to make sure you have the required amount of that type of Merc when that last fight begins.