Family[]
Tenya Ida[]
Tenya visits Tensei in the hospital.
Tensei has a strong bond with his younger brother, Tenya. He considers his younger brother to be more talented than him. For his part, Tenya greatly admires his brother, and considers him his main role model and source of inspiration to become a hero.
When he was hospitalized at Hosu General Hospital, Tensei apologized to Tenya for being unable to be the role model that he looks up to. Tensei asked Tenya to take up his Hero name, Ingenium, indicating that Tensei has a great level of trust for Tenya.
Team Idaten[]
Team Idaten is a professional hero agency operating under the turbo hero, Ingenium. Tensei places great pride and trust in his team, whom Tensei himself has claimed are "sworn, friends and teammates." Tensei's policy strongly advocates teamwork and communication, rather the class of Quirk itself, allowing the team to welcome a wider range of abilities in comparison to other agencies. In the field, the team assists Tensei in various ways, including field agents, a reconnaissance team, a transport team, and even a control room with an operations team.
Naruhata Vigilantes[]
Koichi Haimawari[]
Tensei meets Koichi.
Tensei meets with Koichi during an early morning run. Tensei is impressed with Koichi's Quirk and offers him a place in his agency, even expressing a desire for a sidekick with a fast mobility Quirk. Later, when Tensei discovers Koichi has been working as a vigilante hero, he withdraws his offer to Koichi, but only because he believes him to be already in the right place.[1]