おまたゆるめはままならない

You play as an angel-in-training.
Your last job before becoming a fully-fledged seraph is to watch over a girl named Yurume Omata.

Well this'll be a piece of cake! Or not. Yurume is kind of dumb, and her sense of virtue is weak, to say the least. If a guy tries to pick her up on the street, she'll just go with it. She lets people grope her on the train without any refusal, and she's just generally a dope when it comes to being aware of her own body.

Borrowing the powers of a senior angel named Kuro, you're going to try to find out how to guide Yurume to a happy life. As an angel, however, you cannot be seen or heard by your young ward. That makes it especially hard to guide her in any meaningful way...