Summary
Every 100 days, Geon-jun breaks up with his sweetheart because he is dissatisfied with his lover’s little apartment. Nonetheless, there is one concept he wishes to maintain: there are stages in every relationship! “Dating from ancient times, you step on the progress step by step from 1 to 10, and when the 100th day is reached, then you have a relationship!” Contrary to Geon-jun, Jung-seok, is a long-haired senior who looks very light but is well-followed by people. After getting to know him, Geon-jun simply defines him as an ‘unlucky senior’. On the other hand, Geon-jun, who has been with his girlfriend for 100 days, meets her with half worry and anticipation but breaks up for the same reason. Feeling sorry for his situation, Geon-jun has a drunken one-night stand and is sober from the unfamiliar pain he feels for the first time. I face the face of the other person who smiles and asks if mine is too small…. “Wait, is this person…??”