Our Sunny Days is the ultimate detox.
If you want to detox, this site is not the best place. It is ~99% toxicity, marvel characters, 50 shades of the same plot, alien bodies, and so on. You can narrow it down some by instantly rejecting anything omegaverse or Korean (we get it, SKorea is a commercial cesspool of a hell on earth, stop rubbing it in our faces, with glitter). Even if you enjoy it ironically, the way you would a B movie or cringe comedy, it gets old fast. A nice, calming story with interesting, down to earth characters is like a unicorn here. So good luck, I guess.
OSD has this problem of characters stating their backgrounds and intentions directly, where everything is explained to you, so you don't have to figure anything out. It is a hallmark of bad writing, not to mention not the way people actually talk. Love Tractor is sort of similar, with better writing. Inoffensive fluff. I could recommend some others, but they are mostly comedy.
Who said something has to be a masterpiece to be enjoyable? OP asked for fluff, IMO Our Sunny Days is the exact opposite of toxic yaoi, whatever you may think of it.
Recos for established relationship bl or any fluffy bl please. I want to detox my eyes and heart