 In 1957 he was awarded the runner-up prize for "Oyakodon," which he submitted in the 11th All Rookie Cup sponsored by Bungeishunju's "Ooru Yomimono" Magazine.However, Oniroku Dan's S&M novel "Flower and Snake", is the work that made him famous.This novel was first serialized in the S&M magazine "Kitan Club" under another pseudonym Kyotaro Hanamaki （花巻京太郎）that Dan used during his early career.