Thank you so much!
the way the game plays out is one lineair story in which you can choose who to help throughout. All the couples are already set, so if you choose to help Georg (glockenspiel) you are helping him to impress Sally (glockenspiel player). You can choose to help anyone at any given time during gameplay, so you can end up with an ending that has the drums couple getting together and the saxophone couple getting together, but not the glockenspiel or violin couple. So that makes for a total of 16 endings !
I’m not so good at explaining it but here is a tumblr post with more info and visuals :
https://pmlylm.tumblr.com/post/188522243362/over-at-the-discord-server-i-showed-people-three
(Also, thank you for pointing out that it’s actually not an otome game, I always misunderstood the meaning appearantly, haha ! I will make sure to not categorize it as such anymore, thanks again ^^)