Once again, when Soichi Haruta - played by Kei Tanaka - went out to work, he found Sachi Izumi (played by Arata Iura) lying in front of the house next door covered in blood. To make matters worse, Izumi suddenly grabbed Haruta's chest.Kiss him and then fall unconscious….

Housekeeper Kurosawa Musashi (played by Kotaro Yoshida) witnessed this scene. In addition, he actually saw Maki enter the home of his ex-boyfriend Takekawa Masamune (played by Mashima Hidekazu)...!Could this be a double affair?Wanting to find out the truth, he launched an investigation, and in order to know more about Izumi who kissed Haruta, he considered sneaking into Izumi's house to act as a butler...!?

Meanwhile, Maki, who has entered Takegawa's house, is worried about Takegawa's recent depressive comments on social media, but Takegawa begins to reveal his true feelings...!?Worried about his subordinates and his mysterious neighbors, Haruta begins to follow Izumi to find out his true identity.In the end, where will Haruta and Mu's "forbidden affair love" go...?

And what are the true identities of the mysterious and terrifying neighbors Izumi and Rokudo Kikunosuke...