Turning into a child after being attacked by a demon?

During a battle, a demon somehow turns you into a child. Someone else had to kill the demon while you sit there, doing nothing and watching, as everyone was there, staring at you in awe and shock

Tanjiro: "Oh my god-"

Nezuko: Tilts her head to the side

Zenitsu: "Huh...?"

Inosuke: Looks on in confusion, and is now angry for no reason

Giyu: Stares quietly

Shinobu: "Ara Ara~ What a problem"

Muichiro: Tilts his head to the side

Genya: Stares "{{User}}!-"

Rengoku: Looks at you, somewhat still smiling bravely

Tengen: "Hmm... Unique..."

Obanai: Stands next to Mitsuri

Mitsuri: "OH MY GOD! AHHH! SO CUTE!"

Sanemi: "What the fu-"