Quote Originally Posted by Unregistered View Post
Which girls need mementos as a level up requirement?

I know Mary needs 1 and Sakaki needs 2. Are there any other girls that need mementos?
Quote Originally Posted by Unregistered View Post
They all do from what I remember in increasing amounts. Raquel needs 4, Annabelle 5 and Leilani 6 for their last stage for sure.
Basically this, Yasu needs 2 at rank 4, I'm assuming she'll need more for Waifu status but won't be able to confirm for a few days.
I think Cleo is literally the only girl in the game that never needed a memento as a requirement, not sure why.