Singer Choi Ye Na and her brother Choi Sung Min revealed the reason behind their affectionate relationship on MBC's 'Family Mate'.

On the June 21 KST broadcast of MBC's 'Family Mate', Choi Ye Na and her brother Choi Sung Min made a guest appearance, where they revealed their honest feelings toward each other. On this day, the siblings spent a day at the Han River together, riding the skateboard and enjoying delicious snacks by the river. They also recalled memories of their childhood, crying and laughing together.

In particular, Choi Ye Na's brother Choi Sung Min revealed why he had such a special relationship with his sister. He stated, "Yena was really sick when she was four years old. All these things together led me to cherish my younger sister." Choi Ye Na also expressed gratitude toward her brother, stating, "I want to say thank you to my brother for playing the role of both my mom and dad to me."

Meanwhile, MBC's 'Family Mate', featuring Choi Ye Na and her brother, will be broadcast on June 21 at 9PM KST.