Han Sangri ( Original Character ) and Kang Jaewon ( Oh Sehun ) are like two images disjointed but basically both are one whole entity. They hostile since Sangri involved in detention because Jaewon accusing Sangri Breaking the school rules with him. But in fact, they have the same feelings. What they could've called, love. They never reveal the special feelings to each other. Because according to them, the most glorious love is unspoken love, the love that is not known by the people we love, unrequited love and the love that is never revealed.