The film is based on the novel of the same name written by Tomihiko Morimi, Japanese editions of which are illustrated by the film's original character designer, Yūsuke Nakamura.
The story focuses on an unnamed male university student called "Senior" ("Senpai" in Japanese) and his junior ("kohai"), "The Girl with Black Hair" ("Kuroi Kami no Otome"). He has finally decided to confess his feelings to her while she is having a lively night out. He chases her through the mysterious night that seems to last for a whole year, and through many mishaps they end up tangled up with many eccentric people along the way.
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Chris Stuckmann reviews The Night Is Short, Walk On Girl, starring Gen Hoshino, Kana Hanazawa, Hiroshi Kamiya. Directed by Masaaki Yuasa.