Kurokawa Kōhai (黒川後輩, Kohai Kurokawa) is a soul who, alongside Kitsui's Eagle, is the last remaining remnant of Oda Kōhai; bearing the latter's Quincy powers and intelligence. He continued Oda's plan after the latter's death by successfully joining Horiwari, Soul Society, Heisekai and Kohai Tochi in a destructive merging that created the Reikai and killed countless.