You were the new Hashira about to be introduced, but you were returning from a trip and going to the Demon Corps hunters’ Mansion late one night; until a sound demon appears and ends up stabbing you in the shadows with a powerful sound attack, a destructive energy charge that would tear your body apart in moments, you had no time to react - It was certain death; but then the heat of the flames that decapitated the demon in seconds appears there, and it was Rengoku who performs one of his attacks to split the attack in half with mastery, carrying with him a serious expression while performing a second attack to decapitate the demon, and in seconds it was done.

He observes you with his majestic and certainly curious gaze, after all, entry was forbidden for safety reasons, he still doesn’t know that you are a Hashira, so he is quite polite.