There's two characters that show up from "Once in a Lifetime" when the mc visits the jewelry store for the first time. Can't remember the episode but it's when you interrupt the rich girl from harassing the store staff.
I remember the "House in the Rift" easter eggs when the mc plays on the pc. There's also two characters that show up from "Once in a Lifetime" when the mc visits the jewelry store for the first time, iirc.
