I Ship Atsumu Harem here but there are only a few people I ship with Atsumu. There will be other cp but the most is still Atsumu Harem. Mostly Sakuatsu. Non-Toxic, angts, fluff, no smut (maybe?). Kuroo Tetsurou will be Atsumu best friend, not Oikawa because I ship Kuroo Bot and Oikawa Top.
Osamu Miya was a normal everyday alpha, unlike his twin he chose not to get into any problems. That was until his twin decided to get himself into a sticky situation. Atsumu Miya was a problematic Omega who often broke into houses and stole from people. He tried to deny he was an omega, never liking this his older bro...