Vampire's PathoS by Team OS

It follows the Vampire, who hunts the Sister, or so that's what the songwriter named our characters. There's a prequel song called Sister's MercY before that.

Musically, after '(shall) claim the Grand Finale' there's a slight pause, and then that's where you know shit has gotten real and there's a confrontation.

Between 'Oh, God, please guide us' and 'The overpowered villain swings around logic named violence', there's a laugh in the background.

and then somewhere after 3:10, there is the sound of a teacup breaking, which is the reference to Sister's MercY, since Sister's MercY is basically about a religion that 'worships the god who loves tea'

even before the PV came out, and there were poor translations I had pretty much guessed what happened with that teacup break. Although, the PV makes it a lot clearer what has been going on.