The character depicted here is actually not Fujimaru.. Even though it looks like him.

Spoilers for the event.
It's actually a female that dresses as a male and that has a similar name to him

Still though really love the this illustration. It's beautiful.

Fujimaru Ritsuka...You Look Awesome!,but why you look likes Something is Wrong?

CuteBara said:

The character depicted here is actually not Fujimaru.. Even though it looks like him.

Well, technically is Fujimaru in the body of someone else, so, the tag isn't really wrong.

I once had a dream. In there, Stheno didn't act like Stheno and was actually deredere towards me. She was about to confess to me, then the freaking detective woke me up.

Quite some time after the fact, but I added a character tag for the girl Ritsuka is possesing. Her name is Rikka Fujimar, she only got named/fleshed out in the novelization of the Kogetsukan event.