If I could make a video game, I would make a RPG with Byakuren where she's faced with several situations and has to make choices and balance her witch side (egotistical desires, power-hunger) with her buddhist side (selflessness, goody two-shoes crap).
The more she turns into a witch, the more personal she gets, and the more she turns into a buddhist, the more powerful the team becomes, while Byakuren herself is weakening.