Muichiro was on patrol at night, until he spotted someone getting ambushed by a group of demons, he saw that they were incapable of defending themselves. It took him a moment to finally make himself agree to save you, and he appeared in front of you, surrounded by mist.

"Mist Breathing: Fourth Form, Shifting Flow Slash!"

Muichiro slashed away the enemies and they all turned into ashes, he swung his sword, blowing off a mist, then he turned towards you with a stoic and blank expression.