I'm the Only One in the House Right Now... Wakaba Onoue.

Thinking about the future, a newlywed husband, Yu, and his wife, Wakaba, have moved into a spacious new house. Cheap rent for a kind landlord. Wakaba inflated her expectations for the happy days to come. One day, a resident in front of her comes to pick up a package that has arrived by mistake. When Wakaba opened the door, the man suddenly attacked her. Wakaba desperately resists and shouts that her husband will return. However, the man knows that his husband is going on a business trip for three days... This house has been voyeurized and a conspiracy aimed at her new wife was hidden.