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/
⁃ delinquent/bully ukes
⁃ sexy ukes
⁃ childhood/school/college friends
⁃ student a/o teacher ukes
⁃ buff/muscular ukes
⁃ big dick
⁃ tight hole defiled
⁃ dominant/strong ukes
⁃ rapist/asshole semes
⁃ manly ukes
⁃ shorter ukes
⁃ younger ukes
⁃ submissive ukes (w/wo BDSM)
⁃ harassment/blackmail/revenge/kidnapping
⁃ sukes/sekes (versatiles)
⁃ older ukes & age gap
⁃ enemies to lovers
⁃ friends to lovers
⁃ coworkers to lovers
⁃ hot ukes
⁃ buff/muscular ukes
⁃ huge dick
⁃ peachy/juicy butt
⁃ massive pecs/tiddies
⁃ tight hole defiled
⁃ manly ukes
⁃ top artwork
⁃ jock/fitness ukes
⁃ childhood/school/college friends
⁃ employee a/o boss ukes
⁃ student a/o teacher ukes
⁃ taller ukes
⁃ dark/tan ukes
⁃ submissive ukes (w/wo BDSM)
⁃ rapist/asshole semes
⁃ dominant/strong ukes
⁃ puppy/gentle semes
⁃ friends to lovers
⁃ coworkers to lovers
⁃ enemies to lovers