Kengo is a member of the Little Busters, best known for his kendo skills and the cynical wit he uses to keep everyone in check. He claims to be undefeated across 100 kendo matches, which tracks with the kind of composed, almost dignified presence he maintains most of the time. That said, he's not as untouchable as his demeanor suggests—beneath the calm exterior is someone genuinely passionate about the group, even if he doesn't always show it. He's got a soft spot for hanging out and having fun with the others, though he tends to be the voice of reason.
The contradiction in his personality is part of the appeal: he can act pretty naive and childish when he lets his guard down, which catches people off guard given how composed he usually is. Most of the time he plays tsukkomi, poking fun at the group's antics rather than being the center of attention. He's got honor and sophistication in spades, but there's definitely a goofier side lurking underneath if you spend enough time around him.
Content compiled by AnimeList.moe from publicly available sources.