[Eleutheria]

Originally Posted by Shiosai

There was a very short flashback involving Rena's mom becoming pregnant.

Spoiler:

So that was what that was! I thought what Rina said was みんしん, but it's really 妊娠（にんしん）

PS.

READ THE TIPS FOR THIS EPISODE!

Especially the one called "My Favorite Wine (Ep. 23)". Holy crap. Funny, too.