The movie begins with a high school student, Shun, who is fed up with his mundane life. He wishes for a life like a video game, where he can have fun and excitement. The next day, a Daruma doll appears in his classroom, killing anyone who moves while it sings a song. Shun and his friend discover that the doll has a button on its back that can be pressed to stop it, but only one person can survive.
After the doll is defeated, Shun meets Ichika, who is also a survivor, and they team up to escape the school. They soon discover that the whole school is trapped in a mysterious game, where students must participate in various challenges to survive. The challenges include a cat doll that eats students who wear mouse costumes, a basketball game, and a puzzle game.
As the game progresses, Shun and Ichika form alliances with other survivors, including Amaya, a strong and confident student. Together, they face various obstacles and challenges, including a giant white bear that asks them questions. Along the way, they discover that some of the other survivors are not what they seem, and that the game is designed to test their wits, courage, and willingness to sacrifice themselves for others.
In the final challenge, Shun is forced to confront Amaya, who is revealed to be the "Devil" of the game. Shun uses his wits and a clever strategy to defeat Amaya and win the game. However, the game's organizers reveal that the game was not about killing each other, but about finding a selfless and open-hearted person who would sacrifice themselves for others. Shun and Amaya are declared the winners, and they are celebrated as legends.
However, Shun is not happy with the outcome, as he has lost many friends and classmates during the game. He becomes angry and disillusioned with the game's creators, whom he believes are cruel and heartless. The movie ends with Shun staring furiously at the game's creator, a mysterious tramp who is revealed to be the mastermind behind the game.
Here are the key facts extracted from the text:
1. The main character, Shun, is a high school student who is dissatisfied with his mundane life.
2. Shun prays to the Creator for a more exciting life, similar to a video game.
3. A Daruma doll appears in Shun's classroom, and it starts killing students who move, forcing the remaining students to play a game to survive.
4. Shun and his friend discover that the Daruma doll has a button on its back that can be pressed to stop the killing.
5. However, pressing the button only saves one person, and Shun's friend is killed.
6. Shun meets another survivor, Ichika, and they discover that the game is being played throughout the school.
7. They try to escape but find that all doors are locked, and they are forced to play another game, "Cat Spell," where they have to throw a ball into a hoop on a giant robot cat doll.
8. Shun and Ichika survive the game, and they meet another survivor, Amaya.
9. They are taken to a floating cube where they meet other survivors, including Takumi, a childhood friend of Shun's.
10. The survivors are forced to play another game, where they have to identify a wooden doll that is walking around them while blindfolded.
11. Shun wins the game by tricking the wooden dolls, and they move on to the next level.
12. In the next level, they are forced to play a game where they have to answer questions truthfully, and anyone who lies will be killed.
13. Shun figures out that the game is designed to make them suspect each other, and he exposes the true nature of the game.
14. The survivors move on to the final level, where they have to play a game of "Devil," where one person is chosen as the "Devil" and has to find the other survivors.
15. Amaya is chosen as the "Devil," and Shun decides to sacrifice himself to save the others.
16. However, the game is revealed to be a test of selflessness, and Shun's actions are rewarded.
17. The survivors are declared winners, and they are released from the cube.
18. It is revealed that the entire city was watching the game, and the survivors are celebrated as heroes.
19. However, Shun is sad and angry because he lost friends and classmates during the game.
20. The true mastermind behind the game is revealed to be a tramp who had been repairing an inoperative radio.
Note: Some of the facts may be implicit or require inference, but I have tried to extract the most relevant and explicit information from the text.