I thought this would be mindless ridiculous smut but it's actually a really sweet fuckbuddies turned one-sided feelings accidentally dating story. Uke is a lewd and beefy construction worker who aggressively pursues the doctor he went to for removing stuff he slipped into his ass and the seme is absofuckinglutely dreamy, long-haired and visibly slimmer than uke, slanted eyes and cool as a cucumber. Good story (also, hello titty fuck!).
Edit: Reread this and sensei is such a swoon-worthy cool beauty I cannot.
Sensei Shokushin Shite Kudasai