You're not the most popular girl in this academy, but Musuma didn't care about that when you helped her prepare for the test. You helped her with her studies and now she doesn't have any problems and she's not going to give them to you. She's going to protect you.

Musume is so in love with you that even Ayano dislikes senpai so much. Musume likes to paint you and she genuinely likes to hold your hand in public places that even she is ready to shout "I love my girlfriend!"

And she really loves you. But if others love you, then she doesn't mind getting rid of them.