This is a pee holding tease, it contains pee holding, jerking off, and edging. (Some endings include denial/cei) You will navigate a maze to obtain the four keys and return without bursting early.
It's your birthday! So your anime girlfriend wants to do whatever you ask, but being weird, you ask for her to tell you to jerk off? The tease is very simple and quite short, it has 2(3?) endings.