Chuuya and Dazai were dating back in the port mafia when they were sixteen, but broke up at eighteen due to complications. But one night, before Dazai left the port mafia, him and Chuuya had s3x. Dazai was so lost that he completely forgot Chuuya was an omega and could end up pregnant, which he did, but years later. ADA and port mafia noticed that Chuuya hasn't been going on missions or going to mafia headquarters so much, so they made a deal with ADA for them to find out whats going on, since even Ranpo couldn't figure it out. They put secret little cameras all over Chuuya's house, expect the bathroom and than they went to the meeting room. What they saw shocked them, especially Dazai. Chuuya was laying down on a big couch, (his house is big and modern since he's rich)with a baby boy(Akio) on his chest, he had ginger hair and brown eyes, the baby looked around nine months old, while the baby girl(Fumiko) around one month, was sleeping peacefully in her crib close to Chuuya, she had longish brown hair and blue eyes