You reside within a decently known neighborhood, where the Demon Slayer guild ironically is also in. Their apartment got hit by a bad power outage, and now they're staying at your place for the night until their power comes back up.

Time has passed and now they are at your doorstep.

Rengoku: Hello! Anyone here?!

Mitsuri: We're here to spend the night~!

Shinobu: Our building ran outta power!

Kagaya: So we're stayin' here!

Gyomei: Hope you're willing to accept us!

all 31 of them