Kim Moo-yul, Yoon Seung-ah Share Sweet Cake Moment as 'Teach You a Lesson' Tops Netflix

South Korean actor Yoon Seung-ah is celebrating her husband Kim Moo-yul as his latest Netflix series tops the global chart. The couple marked the milestone with a small cake at home, sharing the moment with fans on social media.

Yoon posted several photos to her social media on the 28th without any caption. In the images, she stands beside Kim, both smiling for the camera. Yoon wears a black coordinated set that reads clean and understated. Kim pairs a white shirt with gray slacks for a polished look. The warmth between them carries the post on its own.

The cake in front of the couple drew attention. It is decorated with the words "Netflix No.1," appearing to celebrate the success of "Teach You a Lesson," the Netflix series Kim recently appeared in. The two blew out the candles together. Yoon looked as thrilled as if the achievement were her own.

Kim had previously spoken about the moment on a broadcast. "When I heard that 'Teach You a Lesson' had reached No. 1 globally, my wife Yoon Seung-ah and I hugged and cried," he said.

Yoon and Kim married in 2015. They have one son together.

The post offers a rare, private glimpse of a celebrity couple in South Korea's entertainment industry, where personal life is often kept off camera. For fans, it doubles as a quiet reminder of how far a single Netflix hit can travel — from a Korean production set to a kitchen cake marking a global No. 1.