Before translation: guessing Yukari spent through valentine's day and she's giving back Ran's chocolate for white day.

Pre-trans: Yukari has been sleeping since December and thought that it's a present from Santa?

wahahahaha said:

Pre-trans: Yukari has been sleeping since December and thought that it's a present from Santa?

We have a winner! Prize includes leftover valentines chocolates!

To be fair, I think we've all had moments where we lost track of time after falling asleep. 'Course, losing track from sleeping for 2 months is kinda special.