User blog comment:Koishi-Komeiji/Mitama Yakumo/@comment-4802891-20191006140235/@comment-24965192-20191006141232

She's the Da Vinci of this game, in that she is the really the shopkeeper.

It might not be a good idea to spam her NP even though she technically can since a 3000 HP loss per NP is not the best idea. Trying to heal herself with her 1st skill makes you lose out on damage and become vulnerable for 3 turns.

Yeah, that passive essentially turns her into a Shielder with Caster base stats. Her Haregi version should have the same passive, albeit it should fit in a different class this time.