The story starts with a boyfriend and a girlfriend on some type of date (amusement park, shopping centre, or similar). The boyfriend wants to wait before having sex, but is flustered because the girlfriend is really beautiful. Something happens that leads them to check into a love hotel (I think it's due to rain, but it could be something else). The room has a shower with see-through glass, and the boyfriend sees her shower, and she's being very provocative. It also has a tub with some kind of jelly/slime/lotion bath, and they fall in, and from there they start to have sex. I think the girl is dressed in some kind of animal wear, like a cap with wolf ears or something. The word “wolf” might also appear in the title. Would very much appreciate if someone knew where this is from.