Tetsuo Yasumi was born January 1, 1954 in Japan. He is a versatile artist and has been working as storyboarder, animation, animation checker and director.

He started his career in 1972 as illustrator for a weekly tabloid paper but quickly changed the profession and joined the animation business in 1975 where he started as inbetweener but quickly also became animator and storyboarder, all on Manga Nihon Mukashibanashi after he joined with Studio Akapan under Takahashi Ryousuke in 1978.

In 1980 he joined Shin-Ei, where his workload increased even more. 1991 was his debut as director. Today he is freelance but does work closely with Group Tac.