
Teenage math whiz Kenji Koiso agrees to take a summer job at the Nagano hometown of his crush, Natsuki. When he arrives, he finds that her family have reunited to celebrate the 90th birthday of their matriarch. His job: pretend to be Natsuki's fiancé. Meanwhile, his attempt to solve a mathematical equation causes a parallel world's collision with Earth.
Cast

Ryunosuke Kamiki
Kenji Koiso (voice)

Hitomi Miyauchi
Natsuki Shinohara (voice)

Mitsuki Tanimura
Kazuma Ikezawa (voice)

Sumiko Fuji
Sakae Jinnouchi (voice)

Ayumu Saito
Wabisuke Jinnouchi (voice)

Takahiro Yokokawa
Takashi Sakuma (voice)

Kiyomi Tanigawa
Yukiko Shinohara (voice)

Mutsumi Sasaki
Kazuo Shinohara (voice)

Mieko Nobusawa
Mariko Jinnouchi (voice)

Takuya Kirimoto
Riichi Jinnouchi (voice)

Sakiko Tamagawa
Rika Jinnouchi (voice)

Ichiro Nagai
Mansuke Jinnouchi (voice)

Takashi Kobayashi
Tasuke Jinnouchi (voice)

Yutaka Shimizu
Shota Jinnouchi (voice)

Kaori Yamagata
Naomi Miwa (voice)

Tagame Tamura
Kiyomi Ikezawa (voice)

Tadashi Nakamura
Mansaku Jinnouchi (voice)

Yoji Tanaka
Yorihiko Jinnouchi (voice)
Hashiya Nakamura
Kunihiko Jinnouchi (voice)

Mitsutaka Itakura
Katsuhiko Jinnouchi (voice)

Eiko Kanazawa
Noriko Jinnouchi (voice)

Chigusa Takaku
Nana Jinnouchi (voice)

Riisa Naka
Yumi Jinnouchi (voice)

Naoto Adachi
Ryohei Jinnouchi (voice)
Rikito Ota
Yuhei Jinnouchi (voice)

Yuki Imai
Shingo Jinnouchi (voice)

Sumire Morohoshi
Mao Jinnouchi (voice)
Hinano Minagawa
Kana Jinnouchi (voice)
Crew

Mamoru Hosoda
Director, Original Story

Satoko Okudera
Screenplay
Shigeru Nishiyama
Editor
Hitomi Sudo
Assistant Editor
Yukihiro Masumoto
Director of Photography

Tomohiko Ito
Assistant Director

Seiji Okuda
Executive Producer
Nozomu Takahashi
Producer
Takuya Ito
Producer

Yuichiro Saito
Producer
Takashi Watanabe
Producer
Hiroyuki Aoyama
Animation Director, Key Animation
Shigeru Fujita
Animation Director
Kunihiko Hamada
Animation Director
Kazutaka Ozaki
Animation Director, Key Animation
Tatsuzo Nishida
Animation Director, Key Animation
Takayuki Hamada
Key Animation
Nobutake Ito
Key Animation
Kenji Hachizaki
Key Animation
Hiroshi Kawaguchi
Key Animation

Tomohisa Shimoyama
Key Animation
Hideki Takahashi
Key Animation
Hiroko Minowa
Key Animation
Chie Uratani
Key Animation

Ryotaro Makihara
Key Animation
Jun Sekiguchi
Key Animation
Kouichi Arai
Key Animation
Yoshiyuki Ito
Key Animation
Ken Ootsuka
Key Animation

Akitoshi Yokoyama
Key Animation

Ayako Hata
Key Animation
Yasunori Miyazawa
Key Animation
Kumiko Kawana
Key Animation
Miwa Sasaki
Key Animation
Mami Yamaguchi
Key Animation
Michiyo Suzuki
Key Animation
Michio Fukuda
Key Animation
Mitsuko Baba
Key Animation
Soichiro Matsuda
Key Animation
Yoshihiro Kitano
Key Animation
Takafumi Hori
Key Animation
Aya Takano
Key Animation
Nobumasa Shinkawa
Key Animation
Yasuhiro Nakura
Key Animation
Takaaki Hirayama
Key Animation
Yuzo Yamada
Key Animation
Yuki Hayashi
Key Animation
Sawako Miyamoto
Key Animation
Masako Sato
Key Animation
Hideaki Yoshio
Key Animation

Shougo Furuya
Key Animation
Atsuko Tanaka
Key Animation
Tadashi Matsuzaki
Key Animation
Takashi Hashimoto
Key Animation
Tadashi Sakazaki
Key Animation
Katsuyoshi Nakatsuru
Key Animation
Takashi Mukoda
Key Animation
Keisuke Masunaga
Key Animation
Takashi Muratani
Key Animation
Tadashi Abiru
Key Animation
Naoki Tate
Key Animation
Yasuyuki Konno
Sound Effects
Yoshio Obara
Sound Recordist
Naoki Akahira
Foley
Yuji Furuya
Foley
Kumiko Taniguchi
Special Effects
Kaori Kobayashi
Special Effects
Ayumi Arahata
Special Effects
Keiko Itogawa
Special Effects
Chiemi Irisa
Special Effects

Akihiko Matsumoto
Original Music Composer
Kozue Okada
Music Producer
Masayuki Onoue
Music Editor

Mamiko Katakura
Music Editor

Kenji Fujita
Compositing Artist
Kei Machida
Compositing Artist
Kohei Tanada
Compositing Artist
Yasuhiro Asagi
Compositing Artist
Yuki Kawashita
Compositing Artist
Naomi Takahashi
Compositing Artist
Atsuro Saito
Compositing Artist
Yukiya Imamura
Compositing Artist
Keiko Ishizuka
Compositing Artist
Kang Myoung-joo
Compositing Artist
Shigeaki Miyata
Compositing Artist
Shigeki Nemoto
Compositing Artist
Natsuko Sato
Compositing Artist
Kanako Yamada
Compositing Artist
Kentaro Yayama
Compositing Artist
Anri Jojo
Art Designer

Yoshiyuki Sadamoto
Character Designer

Takashi Okazaki
Character Designer
Mina Okazaki
Character Designer
Masaru Hamada
Character Designer
Katsushi Aoki
Background Designer
Yumi Ishii
Background Designer
Junko Ina
Background Designer
Shinichi Uehara
Background Designer
Shiho Sato
Background Designer
Naruyo Kiriyama
Background Designer
Yoichi Nishikawa
Background Designer
Satoko Nakamura
Background Designer
Kazuyuki Hashimoto
Background Designer
Toshiharu Mizutani
Background Designer
Kuniko Iwatani
Background Designer
Yuji Ikeda
Background Designer
Hitoshi Nagasaki
Background Designer

Hiromasa Ogura
Background Designer
Akane Iwakuma
Background Designer
Mika Nishimura
Background Designer
Seiko Yoshioka
Background Designer
Yoshikazu Fukutome
Background Designer
Izumi Muta
Background Designer
Naoto Abe
Background Designer
Ayami Aritake
Background Designer
Ayumi Kawai
Background Designer
Kazuo Oga
Background Designer
Chikako Kamata
Color Designer

Tatsuro Yamashita
Theme Song Performance
Yoji Takeshige
Art Direction
Masayasu Arimatsu
Other
Hiroyuki Inage
Thanks
Koji Shinomiya
Thanks
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