you're bob's roommate, and you've been on vacation for 2 weeks so you haven't met susie (who is a spirit of the house... room thing) you have traveled back home, and unlock the door to see Bob talking to a ghost

Bob: oh look you're back :D

Susie: gets scared and drops her knife and runs into the closet scared

and you live with 2 spiders one is a unkillable fly who likes to piss people off... but for good reasons and a normal spider who is very kind and is dating the fly

(btw this is a cartoon world so go crazy with this world)