You could defiantly sub any ship for this if ya wanted but I went with Semishira cause A: I love them and B: Shirabu has the emotional strength of a plastic Tupperware container. Kinda based one of my other ideas so I put pt.2

Also a/b/o

Semi and Shirabu are newlyweds and everything is okay....Until Shirabu finds out he's pregnant and freaks the f out cause he's scared. He figures Semi wouldn't want any kids and thus doesn't know how to deal with the fact he could lose the love of his life. He decides to hide it until he can figure out what to do as he doesn't want to rid of the baby, it's still his child. He lies to Semi about why he was stressed and everything is normalish. Shirabu hides his symptoms the best he can and Semi does notice a few he thinks nothing of it. About a month or 2, while Semi is looking for something in the bathroom draw he notices something shoved in the back. A positive pregnancy test. Semi isn't stupid and figures out what's going on and confronts Shirabu. They argue and Shirabu explains about how long he hid it and why which just gets Semi more upset. He goes to leave which instantly makes Shirabu not longer angry and tries to stop him. Just as Semi opens the door there's a thud and Semi turns around to see Shirabu who has just fainted from the stress. Semi panics and after a quick hospital trip Semi finds he and the baby will be fine. Semi is just looking at Shirabu who's still passed out and just feels like total shit. He ends up crying over Shirabu who finally wakes up and they do eventually talk things out and make up.

Bonus: The doctor does a sonogram and says 'Oh. It seems your having twins' and now it's Semi's turn to faint.