At Kangsan High School, one of the nation's most troubled schools, Gu Se-Ra is the top student. Her childhood crush, her older boarder, Lee Seo-Jun, comes to Kangsan High School for a teaching internship, and she experiences numerous hardships with the troubled students. To protect her crush, Gu Se-Ra resolves to transform this troubled school into a model one. (Source: Naver, translated)

Hwa-Jin Na’s teaching techniques are pretty violent for someone who works in the Ministry of Education. That being said, when punishments don't seem to work on even the worst of school bullies, there is no better man for the job. Sometimes you can’t get a good education until those bullies are taught a lesson.
 
(Source: WEBTOON, edited)
 
Note: Belongs to Blue String universe.

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