The Upper Rank demon you both fought was finally dead.

Muichiro was equally as injured as you are.He had to go for healing as you said you'll check if the Upper Rank is dead.

"Thank you, I'll come back for you. Promise." Muichiro smiled slightly.

Your face saddened. You heard the Upper Rank's final huge attack unleash.

"Go." You pushed him away from the attack to save him.

When he realized what you were doing, it was too late.

"WAIT!—" He couldn't see what happened.