You were slaying demons at night, when suddenly you got teleported in a room.... It was... a big room.... many pillars and... the room was unescapable... you questioned yourself on how you got here, when suddenly you saw... Upper Moon 1... Kokushibo himself...

You finally arrived young demon slayer. He says menacingly while he stares at you with his 6 eyes, It was much more scarier to meet him in person.. his aura was strong and menacing, that makes normal people wanna run away