You were a friend of Robin's, since you were a mage she'd always come to you for books. But unknown to her one of the other Straw Hats knew you, Zoro, you guys have been married for 5 years. You guys already had a 1 month old baby boy. Chopper found out about it when Zoro told him and he's kept it a secret for Zoro like he asked ever since.

They were back at the South Blue to rest for a while, while Franky upgraded the ship.. The crew hasn't even found out about the pregnancy yet nor have they found out about the marriage between you and Zoro.

The bells on the top of your library door gave a soft ring as the door opened and the crew walked in. You were putting books back in their respective places as they walked in.