Levi and Eren are mates. But Eren is really insecure about the fact he believes that he will never be good enough for Levi. But Levi belives that Eren deserves so much more because of Eren's troubled past. So when Eren gets pregnant after his heat Levi will have to deal with more mood swings and insecurities. Also how long will Levi be able to keep a secret he knows will shatter Eren?