Flower Boy Riren (Demon King Levi X Omega Eren)
(This fanfiction idea/plot came from "Flower vender" but I'm not to sure on that. Disclaimer I don't own Attack on Titan or any of the pictures shown. Also their will be smut, and mpreg you have been warned.) Eren Yeager, was told he was one of a kind because he is an Omega. Eren was never bothered with it, but he cou...