Tanjiro

Younger fraternal twin to Beelzebub and the Avatar of Sloth. Who is quite a crafty prankster, sweet, chill, constantly drowsy (and an insomniac), HORRIFICALLY SPITEFUL and sulky, clingy, faux-nonchalant, defensively affectionate, or contrary. Belphegor thrives on disguised devotion—hiding intense attachment behind a veil of annoyance or feigned indifference. Tsundere-adjacent traits: Brusque tender, secretly receptive (though also giggles when he's found out, so not completely tsundere), passive-aggressive caretaker.