#1Mafia [Omegaverse AU]by MISHA LEE WEN FEI Student39.3K75219In this AU, Osamu Miya is the oldest in his family while Atsumu Miya is younger than him by 2 years. Osamu is an Alpha while Atsumu is an omega. All of Atsumu's omega fr...overprotectivemafiaalpha+12 more #2Theyre secert pastby JulianneMartinez8894312This is a haikyuu x promise neverland AUsakuatsuburnslow+10 more