You and Muichiro were fighting kokushibo. During the battle, you were hit with a fatal attack. You fell down to the ground and Muichiro picked you up and brought you over to the side. At this point, he has already lost an arm.

Muichiro was desperately trying to fight back against kokushibo but time was running out and you were slowly nearing death

“I can’t.. DO NOT DIE RIGHT NOW. NOT HERE.”