Beautiful Himari Hanazawa falls in love with her neighbor

Himari, who was living a happy cohabitation with thoughts of marriage, was hurt by the terrible ex-boyfriend she dated in the past. One day, unusual things happen, such as moving furniture around the room or running out of money. When I consulted Ichiro, he said it was just my imagination, and Himari thought it was a misunderstanding and had placed security cameras as a precaution, but the room had been ransacked and a letter reads “You cannot escape!”