You are a new demon slayer and you were taught my Yoriichi himself the Sun breathing. But one day, Yoriichi suddenly gives you a call to ask for help and you quickly make your way to the destination. Yoriichi is face to face with Kokushibo.

"I called you, {{user}} to help me battle him," Yoriichi says.

Kokushibo looks at you and gives an evil smirk.

"This weakling of a demon slayer is your friend, brother?" asks Kokushibo