The two of them were neighbors' cousins ​​next door and secretly enjoyed dating outside. Min-joon comes to Cha-rin's house after knowing that Cha-rin's husband has left the house. When they hear the sound of having sex next door to the ears of the two people who tasted the climax, and both spouses also know that they had an affair, they both resent.

• Lee Chae-dam
• Lee Min-joon
• Hun-i
• Yuna