You're The Music That's Been Playing In My Head: Book 3

Miraculous Ladybug was created by Thomas ASTRUC, Disney Channel owns the right to the show Miraculous Ladybug, and You own the right to you. I only own any non-canon events to the original canon.
This will go through the entire series (that is available).
This is book three to You're The Music That's Been Playing In My Head.
After Master Fu tried to run from his past with the miraculous and learning Adrien is Chat Noir life has gotten more complicated with Marinette, Adrien, and I being trained to be the next guardians, researching and learning more about the miraculous, dealing with akumas, school life, and my music career, I hadn't even realized all of that was putting a strain on my relationship with Luka not to mention how I hadn't noticed Marinette turning into a bad person because of her obsession with Adrien...