Hello World

, stylized as HELLO WORLD, is a 2019 Japanese animated science fiction romantic drama film directed by Tomohiko Itō from an original screenplay written by Mado Nozaki. Produced by Graphinica and distributed by Toho, the film is set in a futuristic Kyoto where a high school student named Naomi Katagaki encounters a person claiming to be himself, who time-traveled from 10 years in the future to save a classmate named Ruri Ichigyō. The film stars Takumi Kitamura, Tōri Matsuzaka, and Minami Hamabe. In December 2018, Itō announced that he would be directing the film along with Nozaki and character animation designer Yukiko Horiguchi, making it his first film outside Sword Art Online series that he was known for directing. Hello World premiered in Kyoto on September 11, 2019, and was released in Japan on September 20. The film grossed over worldwide, with critics praising the direction and animation. The film received novelization, two manga adaptations, and an anime spin-off. Plot Set in Kyoto 2027, the Japanese government has made plans to collect and preserve the city's natural architecture and culture through drones in real time, storing all its data in an infinite-capacity quantum computer known as Alltale. Naomi Katagaki is an indecisive high school student living in Kyoto who harbors a love for reading. One day after school, a mysterious yatagarasu steals his library book and in an attempt to get it back, he meets a strange man that appears out of nowhere. This man, whom only Naomi can see, is revealed to be himself from 10 years later, now grown up and an adult. The adult Naomi explains that he has accessed Alltale from the real world outside in order to change the recorded past and save Naomi's to-be girlfriend, his classmate Ruri Ichigyō, after she was unfortunately struck by lightning at a fireworks festival and rendered comatose. The teenage Naomi decides to call his adult self 'Sensei' and agrees to help, as his adult self has limited capabilities as an avatar within Alltale. Sensei then gifts Naomi a special power, God's Hand, which manifests from the yatagarasu as a translucent gloved hand, to allow him to create anything as long as its chemical and physical structure is not overly complex.