Bukkororii

Bukkororii is a minor character from KonoSuba: God's Blessing on This Wonderful World!, specifically a member of the Crimson Demon clan. He's a young man with dark hair and the signature crimson red eyes of his people, living as Megumin's next-door neighbor in the Crimson Demon Village (son of the village cobbler).

He's portrayed as a somewhat NEET-like, unemployed guy with a creepy, obsessive stalker side—particularly toward the fortune-teller Soketto—which gets played for comedy in his appearances. He shows up mainly in the movie Legend of Crimson and in some spin-off content like An Explosion on This Wonderful World!. His over-the-top Chuunibyou behavior fits right in with the rest of the eccentric Crimson Demons.