Intruder X ~Two wives in company housing targeted~

Nao is troubled by her husband's domestic violence, and Rio is unable to refuse her physical relationship with her biological father, who lives with her husband after he goes missing. Despite having secrets, the two had a harmonious relationship as neighbors. One day, Nao is assaulted by a masked man who has come in from somewhere. Nao goes to consult Rio in a panic and is introduced to a detective who is searching for the whereabouts of Rio's husband, Makoto... A missing husband, a suspicious cleaner, an amorous biological father, and a mysterious detective... Who is Intruder X, who is targeting two big-breasted wives? ?