To Be Hero X is a Chinese-Japanese original donghua series and the third season of the To Be Hero anthology franchise. It premiered on Fuji Television and other channels on April 6, 2025. A co-production between BeDream, bilibili and Aniplex, the series was made at production company and studio BeDream in collaboration with three animation studios, Pb Animation Co. Ltd., Studio LAN and Paper Plane Animation Studio. It is directed by Li Haolin, with music by Hiroyuki Sawano, Kohta Yamamoto, Hidefumi Kenmochi, Daiki (AWSM.), Shuhei Mutsuki, Hideyuki Fukasawa, Misaki Umase and Ryuichi Takada (MONACA).

Sawano Hiroyuki performs the opening theme song for the series (in collaboration with Newspeak vocalist Rei), which is entitled “INERTIA”, while Senna Rin performs the ending theme song for the series, which is entitled “KONTINUUM”.