Kirihara Takuto was one of three S-Class Heroes summoned alongside the 2C Class from Ogito School. Back on Earth, he led his class; after the summoning, he took charge of an elite group of heroes.
He's got a cold, self-centered personality that looks down on most people—though what really drives him is his obsession with "the dignity of a king." He doesn't bother proving his superiority to people he considers beneath him; he just ignores them. His attitude comes straight from his elitist upbringing and genuine talent across multiple fields, which convinced him early on that he was better than everyone else. Interestingly, he was way more composed on Earth, coming off as cool and mature to his admirers and downright charismatic to everyone else—the type who barely said anything unless it mattered.
Once he got that S-Rank status, though, his arrogance kicked into overdrive. He started openly talking about being chosen and destined to rule, like he actually believed it. His training period made things worse; he became noticeably immature about it, refusing to let anyone else fight the strongest enemies and openly bragging to his group whenever he leveled up before they did, announcing it like some kind of proclamation.
Despite all that ego, he's actually solid at reading situations. He knows what he's doing when it counts.
Content compiled by AnimeList.moe from publicly available sources.