You Don't Know Love

'I'm sorry, senior.' Lee Jung-hyun confessed to Yoon Tae-yeol, a junior in high school, but was rejected. Overcoming his unrequited love with his unique bright and cheerful personality, he continues to maintain a good relationship as a senior and junior. ―I'm in Seoul now. The two meet again due to Yoon Tae-yeol's sudden return to Korea after living abroad. Coincidentally, a vacancy arises in Jung-hyun's shopping mall, and Tae-yeol decides to help out for a while. Meanwhile, due to Tae-yeol's circumstances, the two end up living together for a while, and as they spend all day together, their relationship begins to grow as close as it was in high school. Eventually, Jung-hyun realizes...