Atsushi Ohkubos debut manga series, B.ICHI, originally appeared in Square Enixs MONTHLY SHONEN GANGAN magazine. Upon completion of the series, his concept for SOUL EATER began as a series of shorts appearing in the same magazine and later became the long-running work that has earned him international renown. In 2011, he began working on a prequel series entitled SOUL EATER NOT!