Asleep (白河夜船 しらかわよぶね・しらかわよふね Shirakawa yofune or yobune) is a novel written by Japanese author Banana Yoshimoto (吉本ばなな)in 1989 and translated into English in 2000 (book was released in 2001[1]) by Michael Emmerich.

The story is about the relationship between Mari and the narrator, and about how the death of a loved one, and the secrets they have left behind, can affect the people who were closest to them.

She hears strange music at night and remembers the face of Haru, a woman she lived with when they were both fighting over the affections of the same man.

After her best friend, Shiori, a kind of "sleep prostitute", commits suicide, the young woman is left feeling adrift in her own life, until she meets the spirit of her boyfriend's wife.

Asleep (English edition) by Banana Yoshimoto In 2015, the third story was adapted for the big screen by Shingo Wakagi.