This show takes a Nintendo fitness game and somehow makes the ritual of showing up to punch things into something that quietly changes how you think about your body. The animation moves with actual weight and effort, not the floaty weightlessness most sports anime default to. Watching a character learn that she can do hard things, one round at a time, lands differently when you've felt your own muscles burn in the same rhythm. It's built for people who need permission to start, not people looking for championship arcs.
Kimi to Fit Boxing is a 2021 short-form TV anime that runs for twelve episodes. It adapts Fitness Boxing, an exercise game that Nintendo published exclusively for the Nintendo Switch. The source is a workout game built around boxing moves, so the adaptation sits in the sports genre and brings that fitness-focused premise to a series of brief episodes.