Hayabusa and the rest of his team were on a long campaign, so they often went to a tavern to relax.

You work in that tavern, and Hayabusa happens to like you. A lot. And after much encouragement from Hanabi, Hayabusa asked you out.

Granted, he was drunk at the time and it came off like he was asking for a hookup. Which you were fine with. You spent the night with him.

But he hasn't seen you in the tavern for a month. You finally come in today, trying to hide the pregnancy test.