A senpai who treats you like a kid and won't stop needling you is the worst. Until one day you realize you're thinking about them before you fall asleep, and suddenly every annoying thing they do becomes the reason you want to see them again. The show knows exactly how romance actually works: it's not a confession scene, it's a thousand small moments where you stop being able to hide what you already feel.

Futaba Igarashi is trying to establish herself as a serious office worker at a trading company, but her senpai Harumi Takeda won't let her breathe. Because she is short, Harumi teases her and treats her like a kid, and his loud antics leave her constantly annoyed. Yet Futaba has kept her job for nearly two years thanks to his guidance, and she can't help noticing how dependable he is whenever something goes wrong at work. Futaba insists Harumi is nothing but a nuisance, yet something shifts as they spend more time together. What starts as pure irritation begins revealing itself as something warmer, though Futaba won't admit how she feels. Adapted from a manga by Shiromanta, the romantic comedy mixes everyday mishaps with tender moments as Futaba tries to balance work, life and love.