Kim Sejeong became a loner because of X and best friends Kim Jung-hyun and Jang Dong-yoon built more hatred for each other. On the latest episode of the KBS drama 'School Ra Eun-ho (Kim Sejeong) went after the culprit X.
School 2017 (학교 2017 - 16 episodes - airing now. So far it's a pretty generic high school drama not bad, but nothing stellar in the writing. chemistry, or performances so far. Its sort of a rehash of all the high school dramas I've seen.