The long-awaited sequel to the Night-time series! The fourth installment following the highly popular previous work! This time, vol. 4, two titles are released at the same time! While keeping the concept of not being noticed by the husband, we have pursued further story and reality! And the skillful camera work has been completed to convey the tension to the fullest! Even those who have already seen the previous work will surely be satisfied! Please enjoy the appearance of someone else's wife, open and messy.