Fourteen-year-old Iruma Suzuki has just been abandoned and sold to a demon by his irresponsible parents! Surprisingly, the next thing he knows he's living with the demon who has adopted him as his new grandson and has been transferred into a school in the Netherworld where his new demon grandfather works as the principal. Thus begins the cowardly Iruma-kun's extraordinary school life among the otherworldly as he faces his true self, takes on challenges, and rises to become someone great.

Ayumu Murase, Ryohei Kimura, Ayaka Asai, Daisuke Ono, Saori Hayami, Takuya Sato, Takaya Kuroda, Mitsuki Saiga, Yoshitaka Yamaya, Nao Toyama, Tetsuya Kakihara, Kaede Hondo, Gakuto Kajiwara, Takuto Yoshinaga, Genki Okawa, Shunichi Toki, Junko Takeuchi, Shin-ichiro Miki