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Nijiri Days (虹色デイズ, Nijiiro Deizu, lit. Rainbow Days) is a Japanese shōjo manga series written and illustrated by Minami Mizuno, and published in Shueisha's Bessatsu Margaret magazine. A drama CD was released with the seventh volume of the manga in October 2014. An anime adaptation produced by Production Reed premiered on 10 January 2016.
The manga follows four high school boys who are all friends. They do not belong to any club and just like to hang out with each other. Natsuki, the protagonist, is a hopeless romantic who has a crush on a girl named Anna. His three other friends keep meddling with their relationship.