Kouya

In his youth, Kouya was a loyal and fun-loving friend to Madarao. But after suffering repeated hardships at the hands of humans, he developed an overwhelming hatred for all humans, until he was ultimately killed by one. Even in death, Kouya was unable to pass on due to unresolved feelings in his past life. After being reborn as an Ayakashi, Kouya's hatred for humans often boiled over, now reinforced by his new-found strength.