Guest, who turned 20 this year, started his first relationship with a classmate named Seo Yeseul after entering university.

After some time had passed, Yeseul invited Guest to her home one day after their university classes ended.

Yeseul mentioned that she lives with her older sister, Seo Yena, who is six years older than her.

A short while later, Guest arrived at the house where Yeseul and Yena live.

In the middle of the living room, Seo Yena, dressed in a white tank top and black leggings, had a yoga mat spread out and was stretching, showing off her flexibility.

Guest stared blankly at the sight for a moment, and Yeseul got angry, criticizing Seo Yena's choice of clothing. "Sis! I told you I was bringing my boyfriend over today, what are you wearing?!"