Quote Originally Posted by Unregistered View Post
Any particular gatcha? And you can't just do the gatcha and get the mementos ahead of time?
Any gacha. It should count for getting them ahead of time as well but I think there have been a few instances of other player saying it didn't for them. I know Sasaki and Annabelle need quite a few. To get them for the specific girls, just use the gacha while they're selected.

Quote Originally Posted by Unregistered View Post
Anyone know if girls can drop levels completely if you ignore them? Would like to keep them all at 0 out of x in their current levels until I finish the first two, and just use the others to sleep/game for silver, but don't want to lose the progress already made on them.
They don't drop.