Of this genre of union of several anime universes, this was the best one I've played. In the others, it's more about spending time with the girl, talking, creating intimacy, to start developing the relationship, which becomes quite stagnant and without a story. Here there is a story, which is quite interesting. You have events with the girls, which you can only do once, since it can be an intimacy event or something related to the game's story. Of course, there are elements where you go to the girl's room to have an intimate moment. But for that, you need to develop the relationship in the events I mentioned. But the game is full of bugs. There is a bug that prevented me from continuing in the game. It's in the part where you help carry the protagonist's sister's bags. When you get home, in the part where she says that now she can do the rest by herself, there's an error. Even if you ignore the error, you go back to the room, you earn the intimacy heart, but the protagonist's sister stays in the same place in the city, as if you hadn't done the event. Even if you try again, it gives the same error.