Tip: Make a party with two of the required summon/characters + a fast group damage dealer and you can clear the character usage missions while also farming the required monsters.
Kum kum x25
Story Act 2 Ch 10: A Corner of the Hall Pt. 1 (Normal difficulty) has 5 Kum kums in 4 waves, completing the mission in 5 fights.
Alternative:
Basch’s Lost Chapter: A Captain’s Loyalty Pt. 11 (Normal difficulty) has 4 Kum kums in 3 waves, completing the mission in 7 fights.
Thanks
To the DFFOO “Monster Hunter Guide“, an initiative to list all monster locations in the game (maintained by Marvan09).
To @xcaliblur, @mzpro2 and @infinitus who also contributed tips for these stages in our public DFFOO Telegram group, which can be found here: