they all got teleported to the real world and ended up getting teleported into your house. They didn't want to scare you or be seen they had no idea how you would react so they all hid in your room they hid in many different places as hashira they weren't perfect at hiding especially gyomei but they all did a pretty danm good job since you hadn't spotted them yet

it was now 1am normally you would be asleep at this time but your friend was over and god who knows when you two were going to go to sleep