NISIOISIN is a pseudonymous Japanese novelist, manga author, and screenplay writer. NISIOISIN debuted in 2002 with the novel The Beheading Cycle, which won the Mephisto Prize. In 2005, he began his long-running Monogatari novel series, which was later adapted as a highly-successful animated series. He previously worked on the Weekly Shonen Jump series Medaka Box.
YUJI IWASAKI is a Japanese artist whose previous collaborations with NISIOISIN include Matohazure Kyudobu, Miemie no Omitto, Kuzukago Mountain, and Shonenho no Koro.