The band Asian Kung-Fu Generation also returned to write and perform the theme song ' Kōya o Aruke' ( 荒野を歩け, lit. The film was made by most of the same lead staff as The Tatami Galaxy, including original author Morimi, original character designer Nakamura, character designer and chief supervising animator Nobutaki Itō, screenwriter Makoto Ueda and director Yuasa. The film ends with the two meeting for coffee before going to the bookstore. Her final visit is to the senpai, who gives her the copy of Ratatatam and suggests visiting a used bookstore together, to which she enthusiastically assents. The kōhai visits the companions she has met throughout the night, all of whom have caught the same cold as the senpai, and nurses them back to health. Having caught a cold, the senpai returns home.

He attempts to replace the male lead in the scene, but is unsuccessful. Senpai learns that the kōhai is to play the lead in the final scene of a guerilla theatre production. He wins the book, but the contest is interrupted by the God of Used Book Festivals (aided by the kōhai) who redistributes all of Rihaku's books back to the festival at reasonable pricesĪfter obtaining the book, the senpai and the kōhai both go to the school festival. The senpai notices that kōhai's picture book is amongst the collection, and competes. There, Rihaku is hosting a spicy food eating contest making used book enthusiasts compete to select a book from his rare collection. Meanwhile, the senpai and kōhai both go to a used book festival to search for a picture book from the kōhai's childhood. She later participates in a drinking game with Rihaku, a supernatural being, and wins. Higuchi and Hanuki lead the kōhai in gate crashing strangers' parties, where she drinks an impressive amount of alcohol. She wins the admiration of two other patrons, Higuchi and Hanuki, after punching Tōdō when he makes an advance on her. The kōhai meets a pervert, Tōdō, at a bar. The senpai plans to confess his romantic feelings for the kōhai to her that night, though circumstances keep them separated for a majority of the evening. The film follows a night out for two university students: an unnamed woman – referred to as Kōhai ( 後輩, 'Junior') throughout the film, and kurokami no otome ( 黒髪の乙女, 'black-haired maiden') in the film's credits – and an unnamed man – referred to as Senpai ( 先輩, 'Senior') in the film and its credits.

Though both works share a Kyoto University setting and some characters, the plotlines are largely unrelated.

The film is a spiritual sequel to The Tatami Galaxy, also based on a novel written by Morimi and directed by Yuasa.

It has been awarded the Grand Prize for Best Animated Feature at the Ottawa International Animation Festival and the Japan Academy Prize for Animation of the Year. The film was released in North America as The Night Is Short, Walk On Girl, with a leading article added, but in other English-speaking regions without one. The film is based on the 2006 novel The Night Is Short, Walk on Girl written by Tomihiko Morimi and illustrated by Yusuke Nakamura, who also served as the film's original character designer. Night Is Short, Walk On Girl ( Japanese: 夜は短し歩けよ乙女, Hepburn: Yoru wa Mijikashi Aruke yo Otome) is a 2017 Japanese animated romantic comedy film directed by Masaaki Yuasa.

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