Is alternate universe in which males can get pregnant. Everyone get a 2nd gender which can be: α -Alpha (high rank), β -Beta (common), Ω -Omega (lowest)
☆ MORE ABOUT OMEGAVERSE:
http://www.mangago.me/read-manga/abarenbo_honey/nbt/6d5913acc7b0dbb2/ChChapter_1/6/
http://www.mangago.me/read-manga/erito_937_wa_yoru_ni_oborete/uu/tr_chapter-3/pg-27/
http://www.mangago.me/read-manga/kashikomarimashita_destiny/mi/f934afad5dcaafc116852fb7793fd141_chapter-1/6/
Must read + contains spoilers.
I'll just put whether the seme is madly in love, obsessed, possessive, etc. based on their behaviours/intentions. There are some traumatizing experience on the manga/manhwa/manhua you might come across while reading.
[This list includes non-BL.]
SEME'S DICK PROTRUDING THROUGH STOMACH
As much as I want to, I don't want to indicate which chapter the stomach bulge occurs since all of these manhwa/manga deserves to have their plots read and shared.