why does the blood key ost go so hard [NU: Carnival]

i am addicted to this song some times i just sit on the event page to listen to it more what is in this thing why does it go so hard literally other event songs also go hard but i dont know why im so addicted to this one OLIVINE AND DANTE ARENT EVEN MY OSHIS WHAT?????? IS GOING ON???????????? so i recorded the music from my game and made this i am sorry, this is a shit post --- NU: Carnival: https://nucarnival.com/ Me:   / no_xiruo   #nucarnival