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The Sundome manga was adapted into four films. All the films are directed by Daigo Udagawa. The first film premiered in Japanese cinemas on November 20, 2007. The first film was released on a DVD on December 21, 2007, the second DVD on March 23, 2008, the third DVD on December 22, 2008 and the fourth DVD on November 6, 2009. The box set containing all four movies was released on November 6, 2009.
Hideo Aiba is a reserved and obedient high school student, who has never had any girlfriend. He spends all his energy on masturbating, his true reason for living. His life and his solitary activities will take a radical change when a new transfer student, the sexy Kurumi Sahana, joins his class.
A teenage girl transfers to a new high school. She and a boy in the class join the same school club and during one of the activities she confides in him that she was previously a male. Later admitting that the sex change was a lie, she agrees to date him as a form of apology. On their first date, however, he finds himself handcuffed by her class-mate.
The high school boy and girl from Sundome 2 continue their sexless relationship in which she is sadistic and he is masochistic, but one day there is a rumour at school about her having a relationship with a different, and older, man. The boyfriend feels as if his girlfriend is hiding her relationship with the older man.
The boyfriend of a Japanese high school girl comes to know about the older man his girl is also seeing. The older man pays for a sushi meal for the high school boy. The boy does not want to accept and wants to return the money so begins working part-time at a karaoke bar to earn income. The girlfriend asks him to come over to her place one day. They spend time together, he goes out to buy drinks and when he returns she has disappeared. There is blood in her room.
A beautiful girl, Gumomo Hayaka (Koko Kamata), transfers to Class 1C. Hideo Aiba (Shota Takasaki), a high school boy in the same class, falls in love at first sight with this transfer student for the first time in his life. The words that Hideo is confronted with by Huwano are, "Even if we were alone on earth, I would never have sex with Hideo. Hideo is absolutely obedient to Hu-tomo's orders, and he follows her every word with devotion. What is the true meaning of the devilish Hideo? And how will the slightly SM romance between Hideo and Gumomo end?
When transfer student Walnut Sakura joins Aiba Hideo’s “Romance Club,” he’s deflated by her confession, only to learn she lied out of worry for him. After apologizing, they agree on a first date, but the moment they meet, Walnut handcuffs him! How will their unconventional date unfold?