List of Days chapters

Written and illustrated by Tsuyoshi Yasuda, Days was serialized in Kodansha's Weekly Shōnen Magazine from April 24, 2013, to January 20, 2021. Kodansha collected its chapters in forty-two tankōbon volumes, released from July 17, 2013, to March 17, 2021.

Kodansha USA publishes the manga in a digital-only format since April 25, 2017.