The first couple - uke has a fetish for a particular porn actress and seme has a fetish for the uke's face while orgasming. Second story - uke is very kinky and is into bdsm, seme turns out to have a thing for it too.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Koisuru Futari no Taion