Fatal Frame: Projecto Zero
"Big Brother?" Chitose looked up at Itsuki

Seeing his little sister, Itsuki smiled.

"Are you okay, Chitose?"

Happy Christmas!

Happy Christmas!

In the Shadow Ritual ending on the FF2 remake, Itsuki's in his cell with a crimson butterfly. Do we know who this crimson butterfly is yet? It can't be Mutsuki. Mutsuki never became a butterfly.
Anonymous

No and definitely not Mutsuki.

It may just be a crimson butterfly random.