I'll check it out later, thanks
Edit: I don't see it. Why do you think it copies CH? From what I could tell, the only similarity is the vague school setting, but even then, the MC there is a student.
the school is identical from the entrance to the class room granted the story is different but the back ground looks the same
Ah. Well, you'll find that particular school in a lot of Koi games. It's one of the base maps to use, so a lot of people use it.