War of High School: The Series(2016)

Original title: สงครามไฮสคูล

A convent school only for girls will allow boys for the first time. These new students will bring a war among the girls, while the whole school tries to deal with the mysterious death of a student named Jessica. In the middle of this war, Pound, a shy and polite kid, will have his attention disputed between Violine and Pim. Will everyone survive by the end of this war?