Reference Film X: MEMENTO MORI by Tae-Yong Kim and Kyu-Dong Min

Yeogo goedam II (1999)
Directed by Tae-Yong Kim and Kyu-Dong Min
Also Known As:
Memento Mori (International: English title)
Memento Mori: Remember the Dead (Philippines: English title)
Whispering Corridors 2
Runtime: 98 min / 186 min (director's cut)
Country: South Korea
Language: Korean
Colour: Colour
Sound Mix: Dolby SR

Credited cast:
Min-sun Kim as Min-ah
Yeh-jin Park as Hyo-shin
Young-jin Lee as Shi-eun

Summary
Min-Ah finds a strange diary, capable of arousing hallucinations, kept by two of her senior fellow-students, Hyo-Shin and Shi-Eun, who seem to have an unusually close bond. But Hyo-Shin suddenly kills herself, for no obvious reason, and the entire school is shocked and depressed. Min-Ah, however, starts to feel different. It's almost as if she's somehow possessed by the dead girl...