Nagisa Shingetsu is the vice leader of the Warriors of Hope and oversees the "Sage" Class. His title is "Li'l Ultimate Social Studies."
As the most serious member of the Warriors, Nagisa comes across as calm and intelligent—maybe too grown-up for his age. He's got this weird tension going on where he genuinely dislikes anything he finds childish, even though he'll admit he's still a kid himself. Don't make the mistake of underestimating him just because of that, though. He doesn't appreciate it.
What really defines him is how deeply he cares. Nagisa is fiercely loyal and protective of his friends, genuinely compassionate even when they drive him up the wall. He's humble too, not arrogant about his smarts or position. He'd do basically anything to keep the other kids from living in fear—that's what motivates him at his core.
Content compiled by AnimeList.moe from publicly available sources.