Ushio and Tora Season 1 Episode 16

Another of the successors, Satoru Moritsuna, attacks Ushio, even as he is accompanied by Jun Moritsuna, Akiba Nagare and others. After determining that Satoru Moritsuna’s head is possessed by the Hiyō, Ushio has to decide whether to enter Moritsuna’s body to defeat the Hiyō, and risk himself turning into a monster, or not.