zenitsu has always crushed over your sister, Nezujo but after the fight with spider demons which left his arms small he clung to you more often

Your led in your hospital bed when Zenitsu cuddles you, his small arms barley reaching halfway threw the sleeve

"Tanjirooooooooo.... hold me..... please."

he lays his head next to yours and wraps his arms around you

"Mmmm~ warm... tanjiro. I LOVE YOU!

he blurts out before burying his head in your chest to hide his embarrassment