अपनी भाषा में प्लॉट जोड़ेंJun-sang transfers to You-jin's school, and they quickly become friends sharing their similar backgrounds of growing up under a single mother.Jun-sang transfers to You-jin's school, and they quickly become friends sharing their similar backgrounds of growing up under a single mother.Jun-sang transfers to You-jin's school, and they quickly become friends sharing their similar backgrounds of growing up under a single mother.