Cookie run。Mansion Adventures (CR AU)

Note: This is my first time writing a fanfic so it's my version of the story and also, my English grammar aren't really the best so my apologies if you saw any errors (all these cookies dont belong to me, huge Credits to the Devsisters)

Addie's mansion looks like a normal mansion on the outside but what do you think will it have in the inside? He has a mysterious next door neighbor that he feared in the past and why and when is he a afraid? Both him and his neighbor have an unusual mansion...