On December 1, the producers of 'Our Neighborhood Arts and Physical Education' revealed a sneak preview of the upcoming episode, garnering much buzz.

According to the producers, Kang Ho Dong was hit in the face by a tennis ball that Jung Hyung Don had hit during practice. While practicing for a doubles set, Jung Hyung Don had received Shin Hyun Joon's serve.

However, because of the angle of Jung Hyung Don's racquet, the ball went straight towards Kang Ho Dong and struck his forehead, causing Kang Ho Dong to fall to the ground. 

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The producers also revealed that they had to stop the recording after seeing Kang Ho Dong clutch his face in pain. They said, "Because of the unforeseen accident, Jung Hyung Don ran to Kang Ho Dong and hugged him saying, 'I'm sorry hyung. Spare me.' But when Kang Ho Dong stood back up after spending some time on the ground, the worried cries of Jung Hyung Don soon turned into a cry of pain." 

The episode is scheduled to air on December 2 at 11:10PM.