Originally Posted by fghk0

Does anybody know "6 Star ticket" is no deadline? Or have a time limit?

Only girls have a deadline ... This is what I currently know.

It's safer to asume it does have a deadline. Especially if the selection of girls available is subject to change, holding out and hoping for a certain girl to enter the pool is generally not advisable. Even Flower Gems you buy have an expiration date. Strangely enough, Flower Gems you receive from the game do not.