[PS: Multiple heroines, not a dark story. The protagonist specializes in stealing people from Muzan, drinking only blood and never eating humans. After Demon Slayer, the next world is Part 2 of JoJo’s Bizarre Adventure: Battle Tendency.]
Reincarnated into the world of Demon Slayer, he becomes Kagaya Ubuyashiki’s older brother, Ubuyashiki Shinya.
Faced with the curse that no member of the Ubuyashiki Clan can live past the age of thirty, Shinya puts on the Stone Mask as his younger brother watches in shock.
“I’m becoming a vampire, Kagaya!!”
And so, Shinya the vampire is born, determined to become the ultimate life-form.
