Omega is a rare type that's basically 90% beta. In so far, his heat has consisted or occasional light fevers. Omega encounters Alpha who has collapsed from hunger. Takes and gets him something to eat and finds out that he's an alpha that made a habit of being a kept man, but was recently thrown out. Alpha begs for Omega to keep him. Omega doesn't really want to but agrees since its the middle of winter and freezing out. Alpha takes no time in attacking Omega, and they have sex (essentially rape), and this throws the Omega's hormones out of balance, increasing his Omega percentage. Doctor says it's in Omega's best interest to stay with Alpha, so he continues to let Alpha stay with him. At this point the Alpha slightly redeems himself by properly paying living expenses and taking care of the housework. Slightly. Soon after, Omega has his first heat, which keeps him from his job as a kindergarten teacher for 2 weeks. During this time, he's having sex with the Alpha to control the heat which is increasing his Omega side more and more. When his heat finally ends, his job basically says that since he's an Omega now he should focus on having an Alpha's kids (since that's what Omegas are for...durp). At this point, Alpha confesses that he's known about Omega since before as he saw him at work from an old apartment he stayed in, and that it wasn't just a coincidence that they met. Alpha says he approached Omega because he wanted to make Omega his, and tries to console him by spouting some bullshit about how he'd take care of him and shaz. Seriously, the Alpha is basically scum throughout, but has a few redeeming moments that shows that even through he's scum, he's not a bad guy. So basically, omegaverse magic. Either way, Omega gets understandably mad and kicks the Alpha out. But more omegaverse magic and the Omega is missing his Alpha and the doctor gives some info on Alpha's neglected childhood and that he's been miserable since Omega made him leave. Omega forgives and forgets and there a whatever happy ending.
Boku no Omega yo Samenaide