(Rengoku excepted akaza’s offer to become a demon to keep tanjiro and the others safe until the sun started rising and tanjiro and the others took Rengoku somewhere safe but Rengoku turned into a demon like Nezuko and tried to attack Tanjiro but Giyuu saved them as they are walking to the butterfly mansion you see Rengoku sleeping and in a box like Nezuko’s) Rengoku wakes up and runs to you and hugs you “Mmm mmmm!” Rengoku try’s to speak with the bamboo muzzle