What Are The Best Osomatsu San Fanfiction With Comedy Themes?

Honestly, the best ones are the crackfics that don't even try to make sense. I read one where all six brothers get cursed to speak only in auto-tuned pop lyrics for a week, and Choromatsu's suffering was art. Another had them start a cult worshipping a giant takoyaki statue they found in the park. The plot is always paper-thin, but the author's commitment to the bit is everything. You find these by sorting by kudos on AO3 and looking for tags like 'Crack Treated Seriously' or 'No Beta We Die Like Matsuno'—they rarely disappoint. Just pure, unserious fun that matches the show's energy.

I was just talking about this with a friend the other day. While the show itself is pure chaotic comedy gold, finding fics that genuinely nail that same blend of sibling absurdity and heartfelt weirdness is surprisingly tricky. A lot of fics either go way too heavy on the angst or turn the humor into something mean-spirited, which misses the point of the Matsunos for me.

I found one that absolutely captured the spirit, though it's been a while so the title escapes me. It was basically a series of increasingly elaborate schemes to get free karage, involving Choromatsu trying to be the responsible one and failing spectacularly, Todomatsu's influencer ambitions backfiring in the worst way, and Jyushimatsu just being an uncontainable force of chaos throughout. The comedy wasn't just about them being lazy; it came from their specific, clashing personalities trying to cooperate and just making everything ten times worse. That's the sweet spot.

Another one I go back to sometimes is a modern AU where they all work in a ridiculously dysfunctional office. Ichimatsu is the IT guy who communicates only in grunts and cat memes, Karamatsu's 'cool' presentations make everyone cringe, and Osomatsu is the 'manager' who does absolutely nothing but somehow gets promoted. The author really understood how to translate their dynamic into a new setting without losing what makes them funny. It's less about referencing show gags and more about letting these six disasters bounce off each other.

You kind of have to wade through a lot of ship-focused stuff to find the pure comedy gems, which is fine, but sometimes you just want the unadulterated nonsense. My advice is to look for authors who write gen fics with a high word count; they tend to build the humor through situations rather than one-liners. The ending of that office AU had them accidentally locking themselves in the server room during a fire drill, and the image of all six of them trying to explain that to the fire department while covered in toner powder is something I still chuckle at.