Playful fates of four people.
There's your typical Alpha(a host) XOmega (typical housewife)boyfriends. One fated night, Alpha meets his favorite book author (also an alpha) and raped him and unexpectedly this Alpha host awakened his masochistic streak. Domestic Omega who had his childhood friend (also an omega) as his first love that unexpectedly is the editor of The author Alpha whi raped domestic omega's boyfriend.
If you want an omegaverse in shoujo ver. Read this. It's cute, kinda rushed ending.
Omegaverse/implied pregnancy
Levi an omega who has the memories of his past life met eren, an alpha who looks exactly like Levi's lover in his previous life who died tragically. Levi aches for eren, but eren doesn't remember him or any recollection from his previous life. Eren is however attracted to Levi who goes in heat whenever he sees Eren.
Namida Kareru Na