Actor Seong-guk Choi, who played 21-year-old tennis team leader, was actually 40 years old while filming the series.
This is the second time Kim Hyun-joong plays a character who considers medical career, the first time was in "Boys Over Flowers"(2009) as Yoon Ji Hoo.
Based on the Japanese manga "Itazura na Kiss" by Kaoru Tada.
"Mischievous Kiss" takes over MBC's Wed. & Thurs. 21:55 time slot previously occupied by "Road No. 1" and followed by "Home Sweet Home" on October 27, 2010.