so i have a lot of free time (lie) and i read a lot of fanfic (true). and ive been wanting to make a mob psycho 100 fanfic recommendation list because i think about this series 24/7 still. this will be separated into 2 categories for genfic and shipfic respectively (though the ship category is mostly gonna be serirei bc thats what i read the most of), and word counts/ratings/archive warnings will be in parentheses next to the title! if you read/have read any of these tell me in the comments if you enjoy them!!

GENFIC:

1. tomorrow isn't always another day (rated G/7.7k words/no warnings apply): reigen and mob exorcise a haunted photocopier. and then the next day, they exorcise it again. thats right, its a timeloop! mob, being mob, doesnt even realize until like the third of fourth loop, but reigen figures it out pretty much immediately, so we get to watch him lose his mind through mobs perspective, who sees this all as just Normal Reigen Behavior. extremely delightful.
2. phototropic (rated T/5.6k words/no warnings apply): a 5+1 fic about serizawa and his relationship to his powers. probably has my favorite interpretation of the incident that made him withdraw from society. overall just a really heart-wrenching fic and i adore this authors prose! there are a few content warnings in the notes, so make sure to read those!
3. first aid (rated T/11.1k words/no warnings apply): another serizawa 5+1 fic, though this one is about the various relationships with the children in his life. serizawa being good with kids is a particular favorite headcanon of mine and i think this fic does a great job exploring how he struggles with being someone who helps others instead of just a bystander, or worse. definitely mind the tags on this one! theres a lot of focus on the tension between him and shou and serizawas role as a witness to toichiro's treatment of his son thats just sooo well done, absolutely a must-read if youre insane in the head about claw-era seri like i am.
4. The End of the World as You Know It (rated T/215k words/no warnings apply): speaking of shou! i feel confident in calling this The shou suzuki fic out there. its an ongoing multichapter fic about shou and his team in the aftermath of the world domination arc, and how a kid whos been dedicating his life to a single goal struggles to re-orient himself now that its all over (and now that, in his own mind, he's failed). the characterization of shou here is absolutely on point and all of the original characters are really interesting as well, in general this is just an absolute banger of a fic that deserves your time.
5. The Brassica Heresy: (rated T/27.4k/no warnings apply): rounding out the genfic recs we have some broccoli horror! this is a tsubomi-centric fic set in a really fascinating sort-of bad end AU where mob never reemerges from the divine tree and its roots continue to grow through seasoning city as its brainwashed residents continue on as if everythings normal. tsubomi's memories of mob, however, break her out of psycho helmets control, and she has to hide this from everyone around her as she unravels the mystery of why no one else seems to remember her childhood friend. its been on hiatus for a bit but you should definitely still check it out! i especially love the descriptions of the decaying city, theyre absolutely haunting.

SHIPS:

1. Defrost Setting (rated T/7.7k words/no warnings apply): a postcanon ritshou fic in which shou invites his father over for dinner at his boyfriends house and the funniest possible miscommunication ensues over ritsus older sister who toichiros never met before but coincidentally she seems to know him. aside from that theres also just some really interesting family drama between shou and his father, and the ritshou dynamic here is also just perfect.
2. the parachute candidate (rated T/144k words/no warnings apply): reigen runs for president. an established relationship serirei fic all about reigen running for presidency of the rising sun spiritual union and serizawa struggling to keep up with his husbands sudden political ambitions. this fic does a great job striking the perfect balance between sincere emotion and absurd circumstances and it fits right in with the tone of the source material. the main couple has fantastic chemistry, and of course i have to mention that roshuuto makes for such a perfect villain here, too—hes equal parts ridiculous and threatening with how willing he is to hit below the metaphorical belt, especially in the debate at the climax of the story.
3. Out of Body (rated M/50k words/no warnings apply): i really doubt theres a serirei fan out there who hasnt read this fic lol. the premise is that serizawa starts dissociating so hard during panic attacks that he accidentally astral projects, causing a good deal of panic on everyones part about the structural integrity of his soul. its a really great serizawa-centric serirei fic thats all about recovering from emotional turmoil and figuring out how to live with yourself. reigen is great too, but serizawas arc here is the real star of the show. its rated M but there isnt really any explicit content within the fic, if thats not your cup of tea!
4. Leave a Tender Moment Alone (rated M/18k words/no warnings apply): this fic is out of body's lesser-known unfinished cousin, one might say. this one is more reigen-centric about him realizing his feelings for serizawa might be unrequited as he learns that serizawas started dating one of his classmates from night school. its unfinished, like i said, but the four chapters its got are a great read, especially if you like reigen being the saddest most miserable man alive and some not-so-unrequited love.
5. in absentia* (rated T/26k words/no warnings apply): It's A Bodyswap! well, kind of. i dont want to give too much away because the development is really fun to discover as you read but reigens mind gets stuck in serizawas body after an exorcism gone awry, and awkward homoerotic tension ensues! i think this fic does a great job making this scenario feel stressful and humorous at the same time, and it also features some really neat and kind of experimental prose describing the feeling of having one foot in existence and one in the void.

feel free to drop your own recommendations in the comments too! i love to know what sort of stuff other people like to read too ^^