Yaoi/Shounen Ai manga with a yandere or extremely twisted/possessive lover, either the uke or the seme (must be main characters), which will be stated in the description.
This list will be twisted in nature and only truly "crazy" lovers will be mentioned (ie, NOT just possessive semes with a jealous streak/anger). As such, tw's and content warnings ahoy!
Some relationships will be consensual crazy, whereas some will be unwanted.
Overspill List: https://www.mangago.me/home/mangalist/2537579/
⁃ manly ukes
⁃ employee a/o boss ukes
⁃ sexy ukes
⁃ buff/muscular ukes
⁃ huge dick
⁃ peachy/juicy butt
⁃ massive pecs/tiddies
⁃ submissive ukes (w/wo BDSM)
⁃ taller ukes
⁃ tight hole defiled
⁃ younger/Shota semes
⁃ rapist/asshole semes
⁃ dominant/strong ukes
⁃ sukes/sekes (versatiles)
⁃ uke w/ glasses (Megane)
⁃ servant/slave ukes
⁃ puppy/gentle semes
⁃ established relationship
⁃ coworkers to lovers
⁃ enemies to lovers