During his youth, while Toshiki's parents were landowners, Toshiki lived alone in his apartment in Kyoto to study cultural history, which is very close to folklore studies. Although he was absorbed in his work, his family was sure he come back home someday and settle down, which is why they had arranged a fiancée for him. He had no particular interest in marriage nor his fiancée, who was the granddaughter of a work colleague and former professor of his, so he left the matter alone.