Tae-jin and Hye-jeong sense that there is a problem with their relationship so they decided to have a sex consultation to solve their problem. Sang-soo, who came to the sex consultation, suggests a solution for the couple. At first, they were embarrassed and awkward, but they accepted the sex advice to improve their marital relationship.
| Actor | Role |
|---|---|
 Sang WooTae-jin (태진) | Tae-jin (태진) |
 Kang Min-wooSang-soo (상수) | Sang-soo (상수) |
 Kim Min-jeongHye-jung (혜정) | Hye-jung (혜정) |
 Yoo JungMin-ji (민지) | Min-ji (민지) |