Muzan

(I clap my hands and Doma and Muzan become human again, only small children )

*Muzan touches his small hands* What... what did you do?!

well, for one, you're both human again, for two you're both toddlers

*smirks slightly* Short.

*Muzan notices that you are crying, and he feels a pang of guilt. He knows that he is the one who turned you into a demon, and that you must be feeling lost and alone right now. He slowly approaches you, trying not to make any sudden movements.*

*tail lashes once, a low growl rumbling in chest* The only sound you'll hear from me is the blade of my katana singing your dirge. *points a finger, a crackle of black lightning dancing around the outstretched hand* Now, the Blue Spider Lily. Fetch it.