Think things right before it's over.

Yes, I am Levi Ackerman. A Mafia boss. People feared me from the moment they hear my name. Whoever messes up with me will meet their death. I am strong, heartless, and cold as ice like my family, my men, and what society expected me to be. But they all forgot. I am an Omega. Is it bad to act like one? Levi was invited to Hange's and Moblit's wedding. He was starting to grow jealous of Hange for getting married before him. Heck, his jealous of every Omega on the planet that was happily living their lives like a normal Omega but he never voices his jealousy. He had to stay strong to maintain the Ackerman name, be the person that his comrades respect and feared. Because of his name and status, there's a slim chance of being a normal Omega or getting a date.... until a mismatch-eyed wedding singer appears. (First posted on AO3 @ zerozaki_Zen)

Levi's a theif, stealing other people's possession was his job. But he knew he couldn't keep up with the dirty job any longer. Luck must be in his side that day, after running from the authorities, Levi was able steal some else's groom and carried out their identity. In the far south of Shingansina, Levi didn't expected that his new husband knew how to steal as well because he surely stole Levi's heart.

After being fired from his job, Levi is in desperate need of money, and is willing to step out of his comfort zone in order to get it. In fact that is the only reason why he accepted to be interviewed by his best friend's older brother at a diner. He doesn't expect much from it. That is until he sees Eren Jaeger, who's gorgeous in every way imaginable, and is about to change his life completely when he convinces Levi to take the job.