A Japanese YouTuber recently went viral when people noticed that they’d been uploading a different video of them fighting the Sekiro: Shadows Die Twice boss Inner Father every day for over 1,400 days.
Uni Yasumi has been diligently battling Inner Father for no discernible reason for over almost 4 years, and their story was recently noticed and picked up by Defamincogamer (via Automaton).
This isn’t some “fighting X boss until I win” story about someone who fails to improve despite spending hours on the same thing. Uni Yasumi destroyed Inner Father in the very first video, immediately proving that they’re a very skilled Sekiro player.
Day 1,400 of Defeating Inner Father
Their channel has no description, and none of the videos have any description, either. A commenter on the most recent video made a clever joke in Japanese about daddy issues, which could explain the ferocity Uni Yasumi uses in their battles with Inner Father.
But what is their true motivation? It’s not about demonstrating skill, no. This is clearly about something else, something buried deeper in the human psyche. Perhaps there’s a pain there? A never-ending need to destroy this sword-wielding adversary to prove something, whether that’s Uni Yasumi’s own expertise or the relative inferiority of Inner Father in comparison. Who can say what possesses Uni Yasumi to pick up their katana every day to do needs to be done? They persist all the same, regardless of what we think about their motivations.

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For those unfamiliar with Sekiro—or for people who haven’t played in a minute—Inner Father is an upgraded version of the boss Owl (Father) from the base game, only available in the Gauntlets of Strength additional content.
He’s essentially a faster and more aggressive version of his base game self, brutally punishing thrust attacks with counters. You can expect to do a lot of deflecting during this fight. As you’d expect after 1400 days, Uni Yasumi is exceptional at this particular fight, and it rarely takes them more than 3 minutes to dispatch one of the game’s trickiest bosses.
Perhaps the new-found attention will compel them to reveal their motivations. Perhaps not. Either way, they’ve proven that there’s no-one better at this particular boss fight, and being the best in the world at something is its own reward.