Let's Play Touhou 13.5 - Hopeless Masquerade - Ichirin Story stages 6-7

Ichirin comes across as liking to fight, despite Buddhism having strict rules against fighting. I guess a situation like this is ideal for her.
Ending summary taken from the Touhou Wiki:
en.touhouwiki.net/wiki/Hopeles...
At the temple, Ichirin tells Byakuren what she's seen, leaving the part of Mamizou disguising as her out. They figure Kokoro is the root of the incident as Ichirin expresses a desire to go see the dark noh play again and wants Byakuren to see it as well. She agrees to look into it as the ending notes the incident has yet to be resolved and dark noh is something that brings one's dark side forth. It suggests Kokoro herself is a victim of it. This likely occurs before Byakuren's ending.