The entire show is just Tsumiki being furious that Io won't admit what they are to each other, while he's too dense or too patient to say it first. Comedy lives in that gap, in her glaring at him across a lunch table while he smiles at nothing. There's no plot to resolve it, no big confession waiting at the end, just two people stuck in the world's longest misunderstanding, and somehow that's enough to make you care whether they ever figure it out.

Tsumiki is a pint-sized girl with a short fuse, and Io is her infuriatingly laid-back best friend who towers over her. Problem is, she can't figure out what they actually are to each other. One moment he's affectionate toward her, sometimes almost too much, and the next he's completely oblivious to how she's starting to feel. It's maddening. Their friend group doesn't help matters. Mayoi and Sakaki are pranksters who love to tease, and Mayoi in particular gets plenty of mileage out of Tsumiki's feelings. Hime rounds out the gang of five, though she isn't very firmly grounded in reality. Shy about being honest, Tsumiki wonders whether confessing is worth risking their friendship. What unfolds is a high school comedy about the strange space between friends and something more, where confusion and misunderstanding tangle with genuine affection, all wrapped in humor and the warmth of a tight friend group.