i recommend this movie ! (^-^)
The Disappearance of Haruhi Suzumiya (涼宮ハルヒの消失 Suzumiya Haruhi no Shōshitsu ), or The Vanishment of Haruhi Suzumiya, is a 2010 Japanese animated film based on the fourth light novel of the same name written by Nagaru Tanigawa. It is produced by Kyoto Animation and directed by Tatsuya Ishihara and Yasuhiro Takemoto. It was released in Japanese theaters on February 6, 2010 and on DVD and Blu-ray Disc on December 18, 2010. The film has been licensed by Bandai Entertainment in North America and Manga Entertainment in the UK.
Plot
See also: List of Haruhi Suzumiya characters
Following on from the events of The Melancholy of Haruhi Suzumiya anime series, the story takes place from December 16 until December 24, a month after the cultural festival. The SOS Brigade, led by Haruhi Suzumiya, makes plans to have a nabe party for Christmas. However, on the morning of December 18, Kyon arrives at school and finds out everything has changed. Haruhi, along with Itsuki Koizumi, are missing, Ryoko Asakura has mysteriously returned, Mikuru Asahina does not recognize him and Yuki Nagato
is an ordinary human, complete with emotions. Only Kyon is aware that
everything is different, as no one remembers anything about Haruhi or
the SOS Brigade. The only clue Kyon manages to find is a bookmark left
by the alien version of Yuki before everything was changed, telling him
to gather 'keys' to run a program. While wondering about this clue, he
gets to know the new Yuki, who appears to be quite fond of him. As
December 20 comes, Kyon learns from Taniguchi
that Haruhi was at another high school the whole time, along with
Itsuki and others formerly from his school. By revealing his identity to
her as 'John Smith' (his alias when he first traveled back in time and
assisted a young Haruhi), Kyon manages to convince Haruhi to believe his
story. With her assistance they gather the SOS Brigade together in the
club room, thus bringing the keys necessary for a program built by alien
Yuki.Wanting to go back to his interesting life, Kyon activates the program and goes back in time to the Tanabata of three years ago. After meeting up with the future Mikuru, he obtains an uninstall program from the past's Yuki, which needs to be shot at the culprit right after the change in the early hours of December 18. Returning to the present, they find the culprit, Yuki, who had borrowed Haruhi's power to change everyone's memories except Kyon's, giving him the choice of which world he would rather live in. Kyon questions himself about his choice, and decides that his original world was more interesting and fun. Kyon tries to install the program into Yuki but is stabbed by Ryoko, who had retained her psychotic behavior. Before Ryoko can finish him off, he is rescued by future counterparts of Yuki, Mikuru and himself. He wakes up a few days later in a hospital, where the world is back to normal, but almost everyone believes Kyon had been in a coma since December 18 after having fallen down the stairs. When Yuki mentions to Kyon how the Data Integration Thought Entity would punish her for her actions, Kyon tells her to let them know that if they ever do, he can tell Haruhi about him being John Smith and have her alter reality so the Data Integration Thought Entity would cease to exist. As December 24 comes and his everyday life returns, Kyon decides there is still time before he has to go back in time to save himself and decides to join in on the christmas party.