A Blood Pledge

A Blood Pledge Hangul RRYeogogoedamdongbandjasal also known as Whispering CorridorsA Blood Pledge and Suicide Pact is a KHorror film, and the fifth installment of the Whispering Corridors series of South Korean horror films set in girls high schools that began with 1998s film of the same name. Aside from the setting and overall themes, it is unrelated to the other films in the series.

The three girls become very paranoid about the death of EonJoo, and secrets about why each girl had a reason to jump start to surface. SoHee becomes very depressed about the death, unlike the other two. During the funeral of EonJoo, SoHee leaves crying. JeongEon catches SoHee before she leaves and confronts her about the death of EonJoo but SoHee repeats that she doesnt know what happened and leaves.Meanwhile, rumors start to spread around the school. Many girls accuse SoHee of killing EonJoo as their relationship had become strained from the past year. Another girl claims that EonJoo killed herself because she was pregnant. The three girls meet in a corner of the school, each accusing the others of spreading the rumours, but they all deny it. Eunyoung screams, claiming that she saw someone watching them. That evening Eunyoung is lying awake in bed terrified, and her father comes in and beats her for having low grades. The next day she attends school with an eye patch over her left eye and begs Yoojin to let her sleep at her home. ........

Source: Wikipedia