An anonymous former Niji No Conquistador idol group member “A-san”.
In 2014 he established pixiv Production-sha as an idol production branch of the business, and he personally produced the idol group Niji No Conquistador.
Niji No Conquistador performed the ending theme song for the Konna Watashi-tachi ga Nariyuki de Heroine ni Natta Kekka www ‘Narihero www’ anime.
Shortly after, she consulted him about wanting a part-time job, as her salary from Niji No Conquistador was low but the company would not allow her to hold another job.