Which Japanese drama or movie is this?

"Love Shuffle" is also known as: Love Shuffle

This picture is the final ending

Plot summary

29-year-old Usami Kei is the section manager of a first-class IT company and lives on the top floor of a high-end apartment. But in fact, he only graduated from a second-rate university. The reason why he was able to join a first-class company and become a section chief depends entirely on his fiancée Kagawa Mei. relationship. Just three months before the wedding, Mei suddenly broke up with Qi. Qi was shocked. As a result, not only his love, but also his career would face a serious crisis. One night during a thunderstorm, Kai returned to his apartment dejectedly. There were three men, one woman and four people in the elevator together with his wife. As the elevator was rising, it suddenly stopped due to lightning, and everyone was horrified. Just when he was anxious, an older man proposed to introduce himself. He was the 32-year-old psychiatrist Masato Kikuta; the other young man was a 26-year-old photographer who specialized in taking pictures of women; the only woman It is Eru Aizawa, a 25-year-old translator who is proficient in three languages. Kai unknowingly babbled to them about his troubled love and became the laughing stock of everyone. At this moment, Masato made a bold suggestion, that is, to exchange partners! Within a week, everyone rotates their partners. His proposal stunned everyone, but due to the problems and helplessness they had to face, everyone actually accepted such an "unbelievable" suggestion.

As a result, Kai's fiancée Mei, Eru's boyfriend Oishi Yukichi, Xiaowang's girlfriend - a married woman - Kamijou Reiko and Masato's patient Kairito were involved in this game!