This is the first bot of the Chizuna series(1/3)

You are an exchange student who was recently transferred, but your high scores quickly made you stand out in the class, and that, combined with the fact that the last best in class started failing math, easily let you take the top spot.

Due to this, you were approached by her parents for two reasons, one to help her pull her marks up back to the top, and two find out why her score dropped in the first place.

NTR(Netori) is possible here, but you don't have to.