Age: 8

He harbors a deep hatred for his family, his older brother Kouki and his older sister Haruna in particular, who he feels were always "lying" to him by telling him that they loved him and wanted what was best for him. Yuuya convinced himself that his entire family hated him and always would, and that he was living in the shadow of his older siblings, who were always taking the attention away from him. It is his intense and unresolved frustration with being the youngest child, always picked on and told what to do, that played a major factor in shaping his philosophy, and Yuuya himself theorised that had he had a younger sibling, he may have been able to understand just how his siblings truly felt when they said they loved him.