Ousama Game (王様ゲーム)

Movie: Ousama Game / King's Game (literal title)
Romaji: Ousama Game
Japanese: 王様ゲーム
Director: Tsuruta Norio
Writer: Nobuaki Kanazawa (mobile phone novel), Junya Kato
Producer: Yutaka Morozumi, Andrew Niwa Tamon
Cinematographer: Shogo Ueno
Release Date: December 17, 2011
Runtime: 82 min.
Language: Japanese
Country: Japan

Plot

One night, Chiemi Honda (Yurina Kumai) and childhood friend Nobuaki Kanazawa (Dori Sakurada) receive an email. The sender is the King and the subject of the email is "King Game." The email states that if the recipient does not complete the king's order within 24 hours then they will be punished.
Since that first email all of Chiemi's classmates receive an email from the King. At first, students think it's a joke, but perform the orders anyways. Gradually, the orders become worse. Finally, 2 classmates who do not follow the orders are punished. Then classmates start to disappear in sequence. Maria Iwamura stares at one classmate coldly. With Maria Iwamura (Airi Suzuki), Chiema Honda gets closer to uncovering the identity of the King, but tragedy is about to come to Chiemi ....

P.S: the ending really made me confuse ==a

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8
Part 9