= couples who are blood-related or know each other somehow otherwise
additional are the series in the following lists:
http://www.mangago.com/home/mangalist/6968/
http://www.mangago.com/home/mangalist/7543/
http://www.mangago.me/home/mangalist/8347/?filter=&page=2 (just the Kuroneko series)
⁃ younger ukes
⁃ shorter ukes
⁃ sexy ukes
⁃ submissive ukes (w/wo BDSM)
⁃ uke w/ low self-esteem
⁃ tight hole defiled
⁃ big dick
⁃ childhood/school/college friends
⁃ rapist/asshole semes
⁃ student a/o teacher ukes
⁃ childhood/school/college friends
⁃ employee a/o boss ukes
⁃ uke always horny (insatiable sex drive)
⁃ cross-dresser ukes
⁃ puppy/gentle semes
⁃ established relationship
⁃ friends to lovers
⁃ coworkers to lovers
⁃ LGBT parenting
I just love a story where love changes a playboy :3