Takumi Kazuya

A second year student at Iseumi high school that was sent to the parallel world of Yggdrasil when his bath heater exploded. He posted his own isekai themed erotic light novel on the internet hoping to become a famous writer. He is very weak to large breasts and his lustful instincts are always getting him into trouble. In this new world, he can live out his own erotic fantasies as the only male student at Yggdrasil Magical Academy. Similar to him, his little sister is also aiming to become a famous erotic manga artist.