Not ballet but it’s really focused on dancing and a bunch of dancing styles like ballroom and tango
- https://www.mangago.zone/read-manga/10_dance/
Dance Dance Danseur https://www.mangago.zone/read-manga/dance_dance_danseur/
Kenrantaru Grand Scene https://www.mangago.zone/read-manga/kenrantaru_grande_sc_ne/
Not ballet but Ballroom E Youkoso was pretty good and the art is beautiful
https://www.mangago.zone/read-manga/ballroom_e_youkoso/
There’s also Like a butterfly https://www.mangago.zone/read-manga/like_a_butterfly/
are there any other ballet recs other than salad days.