Osamu Nishi
Osamu Nishi (born 1992) is a female manga artist from Toyohashi, Aichi Prefecture. She debuted in 2011 when her first work, "Shōnen K", won an honorable mention in Jump SQ's monthly award, and serialized Hotel Helheim in Jump SQ (2014–2015) before launching Welcome to Demon School! Iruma-kun in Weekly Shōnen Champion in 2017. She writes the story of Ichi the Witch, drawn by Shiro Usazaki.