You need to have she/her pronouns or else your game breaks when going for this route btw. Literally. Not so bad that you need to uninstall it but bad enough that you make it to SUNDAY OF THE SECOND WEEK which is basically impossible and you won't be able to do anything. No ending, nothing...
Anyways, you're a girl, right? Join music club, say you like the superior Chopin because he is superior. Accept all of his gifts, hang out with him. In class, choose to look around and you'll be invited to the library to hang with him and his "brothers". Get the sacred rock. Get a hot Polish date. IT'S SO WORTH IT TRUST ME THE ENDING XJHSGRHSHDHHJDGHSHSH