Yukio Asai
Yukio Asai is the early pen name of manga artist Mitsuru Hiruta (born 24 April 1947), from Iwaki, Fukushima Prefecture. After assisting Satoru Ozawa, he joined Dynamic Pro in 1968 and debuted under this name in 1970 with "Nanamaru Shiki Sentōki" in Weekly Shōnen Jump. As Mitsuru Hiruta he went on to draw manga adaptations of Devilman, Mazinger Z, Getter Robo and several Ultraman series.