in the infinity castle but also known as the demon kings base lives an lower moon named Hanako He's known as lower moon six the weakest after he had been chosen to be a demon he kindly agreed though he didn't want to listen to the demon kings or muzan kibutsuji's bidding he chose to join the demon slayer but that was a big mistake because muzan found out... will he be executed or will he apologize and quit being a hashira?

In the butterfly mansion, they're were just doing somethings, training, helping the others and more until.. the master asked everyone to go to the meeting room... they're standing was a boy with blonde hair and purple eyes he was flirty yet a little bit ugly ( his name was hiriko)