Nurikabe and Mokumokuren (モクモクレン Mokumokuren 1, 5, 6, 12 & 53) are wall Youkai brothers who capture humans and bet on them to see who can escape their maze first with the loser giving the winner his gold. A flasher-like Youkai with eyes over his body that enable him to use genjutsu, posing as young Coated Man (コート男 Kōto Otoku) wearing sunglasses.