The creator known as OUMA is credited as the original creator for the anime The Share Houses Secret Rule. The same credit appears for a 2024 original net animation (ONA) title. OUMA is also listed as providing both the story and art for two manga works. One manga is from 2013, and the other is from 2014. An alternate name for this creator is listed as 逢魔. A birthday of April 23 is associated with the creator. No verified biographical information is available regarding the creators professional background, education, or training in the manga and anime industry. There is no documented information on recurring themes, artistic identity, or the creators significance within the industry. While the name OUMA is associated with other professionals in different fields, including fashion design, those individuals are not connected to the anime and manga works credited to this creator. No verified information confirms any additional original anime, manga, or other creative projects beyond the titles mentioned. The creator is not documented as having voice acting roles.