Responses
http://www.mangago.zone/read-manga/kunkou_schale/
maybe ?? this isn’t omega verse tho sorry
It's not this one... Thank you though
http://www.mangago.zone/read-manga/haikyuu_dj_937_boost/
Is it this one?
Okay so... It's a bl omegaverse and one of the character's name is called Tsukishima (and he looks and acts exactly like Tsukishima from Haikyuu)