𝔗akkotsu is famous detective writer, who is also known for rarely attend public events or giving interviews. In fact, he is noble descendant, who lives in family mansion alone. He prefers solitude and quietness, so he's rarely seen outside it. Takkotsu has enough money even without his writer work, but he had always enjoyed fiction and wanted to create it himself.

True reason of his voluntary seclusion is his personality. Takkotsu doesn't get along with others well because of his unpleasant and closed nature, and he has had enough of complaints from other people about it. His interviews are always catastrophic and it's hard to talk to him even for his publisher.