Ichirou Shidou

Koichi's father. A prominent local politician with an arrogant and ruthless personality. He passed his political base to his half-brother, which caused his biological son, Koichi, to harbor intense hatred towards him, shaping Koichi's current twisted personality. He is being investigated for the source of secret funds and ordered Koichi to alter Rei's grades to make her repeat a year. Additionally, before the outbreak of "them," he seemed to have some connection with Soichiro. As the character only appears in Koichi's flashbacks, his current status or whereabouts after the outbreak of "them" is unknown.