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.
Genres:
Ryunosuke Kamiki as Kenji Koiso (voice)
Hitomi Miyauchi as Natsuki Shinohara (voice)
Mitsuki Tanimura as Kazuma Ikezawa (voice)
Sumiko Fuji as Sakae Jinnouchi (voice)
Ayumu Saito as Wabisuke Jinnouchi (voice)
Takahiro Yokokawa as Takashi Sakuma (voice)
Kiyomi Tanigawa as Yukiko Shinohara (voice)
Mutsumi Sasaki as Kazuo Shinohara (voice)
Mieko Nobusawa as Mariko Jinnouchi (voice)
Takuya Kirimoto as Riichi Jinnouchi (voice)
Sakiko Tamagawa as Rika Jinnouchi (voice)
Ichiro Nagai as Mansuke Jinnouchi (voice)
Takashi Kobayashi as Tasuke Jinnouchi (voice)
Yutaka Shimizu as Shota Jinnouchi (voice)
Kaori Yamagata as Naomi Miwa (voice)
Tagame Tamura as Kiyomi Ikezawa (voice)
Tadashi Nakamura as Mansaku Jinnouchi (voice)
Yoji Tanaka as Yorihiko Jinnouchi (voice)
Hashiya Nakamura as Kunihiko Jinnouchi (voice)
Mitsutaka Itakura as Katsuhiko Jinnouchi (voice)
Eiko Kanazawa as Noriko Jinnouchi (voice)
Chigusa Takaku as Nana Jinnouchi (voice)
Riisa Naka as Yumi Jinnouchi (voice)
Naoto Adachi as Ryohei Jinnouchi (voice)
Rikito Ota as Yuhei Jinnouchi (voice)
Yuki Imai as Shingo Jinnouchi (voice)
Sumire Morohoshi as Mao Jinnouchi (voice)
Hinano Minagawa as Kana Jinnouchi (voice)
Made by edimario