Sunye and Lee Ji-hoon were also surprised.

Singer Sunye wore a school uniform.

On the 15th, Sunye posted several photos with the caption, “The day I drove in school uniform #KnowingBrother #ThisSaturday.”

The released photo shows Sunye. He is wearing his school uniform and taking a selfie in front of the mirror.

Lee Ji-hoon, who heard this, commented, “Is this your eldest daughter’s?” Kahi said, “What about our Sunye?”

Sunye is currently appearing in the musical 'Ruth'.

Kang Min-kyung, Ten Asia reporter kkk39@tenasia.co.kr