Hello World Wiki

Hello World (Japanese: ハロー・ワールド, Hepburn: Harō Wārudo) is a 2019 Japanese animated sci-fi romantic drama film directed by Tomohiko Itō and produced by Graphinica. It was released in Japan on September 20, 2019. Its cast include Takumi Kitamura, Tôri Matsuzaka, and Minami Hamabe. A three-episode spinoff anime titled Another World premiered on September 13, 2019.[1]


The year is 2027, and the city of Kyoto has undergone tremendous technological advancement. Within the city lives Naomi Katagaki, a socially awkward and introverted boy with a love for books, and Ichigyou Ruri, a girl with a cold personality who is often blunt with people, but shares his love for reading. Despite having similar interests, Naomi is afraid to approach Ruri due to her unfriendly nature.

One day, as Naomi goes out for a walk, a crimson aurora pierces through the sky for a brief moment before vanishing. Shortly after, he sees a three-legged crow and a mysterious hooded man who reveals himself to be Naomi from 10 years in the future, explaining that he has come to change an imminent tragic event that happens to Ruri shortly after they start dating. Initially taking his words with a grain of salt, present-day Naomi follows his future self's instructions and starts getting closer to Ruri, determined to save her.

Hello World focuses on the present Naomi alongside himself from 10 years into the future. With the help of his future self, Naomi begins his preparations to save Ruri. Will he be able to change the future?[2]


A 16-year-old high school student living in 2027 Kyoto and the film's protagonist. Initially lacking confidence and decisiveness, he is chosen by his classmates to be a book committee member and whereupon meets and grows close to Ruri. He slowly develops as a person across the film and becomes braver and more steadfast.

Naomi Katagaki's future-self from 10 years later in 2037 and a 26-year-old adult who works as a chief officer in Alltale's Management Facility. Even after 10 years, he frequently visits Ruri in the hospital and repeatedly explores the possibility of accessing Alltale to sync its inner data with her mental state for her to reawaken. His meeting with the 2027 Naomi begins the film's story and throughout the film, he is called 'Sensei' by him. He later dies sacrificing himself for Naomi.

Naomi Katagaki's classmate and a fellow book committee member. Unlike Naomi, she is old-fashioned, decisive and confident in her choices, even if they make her stand out. She later falls in love with him and becomes his girlfriend.

Sensei's good-natured and eccentric professor at the Alltale Management Facility.

Sensei's colleague and Professor Tsunehisa's direct subordinate. She's Chinese.

The class idol due to her cute looks and antics. She later becomes friends with Ruri.

  • Karasu (カラス, Karasu)

Voice Actors[]

Film Trailer[]

The official trailer can be seen here.[10]