Yotasuke Takahashi—called Sekai-kun by Haruka Hashida—is a second-year student at Tokyo University of the Arts (Geidai). He and Yatora Yaguchi crossed paths at the same art cram school before university.
Personality-wise, Yotasuke comes across as quiet and withdrawn, maybe even a bit prickly. He's not great at filtering himself—he'll say what he's thinking without much concern for how it lands. Despite this bluntness, there's something almost refreshingly honest about him. He's acutely aware of how good his art is and won't pretend otherwise, but it's not arrogance exactly. He tends to frame his skill as just. a fact about himself, not something he's especially proud of or confident in. It's just what he does.
Content compiled by AnimeList.moe from publicly available sources.