Ouran High School Host Club is a Japanese manga series written and illustrated by Bisco Hatori. It was serialized in Hakusensha's LaLa magazine between the September 2002 and November 2010 issues. The series follows Haruhi Fujioka, a scholarship student at Ouran Academy, and the other members of the popular host club. The romantic comedy focuses on the relationships within and outside the Club.

LaLa is a monthly Japanese shōjo manga magazine published by Hakusensha on the 24th of each month. The magazine's bonus contents are usually calendars for New Year issues, drama CDs, and so on. In a 2006 survey conducted by Oricon, Japanese girls selected LaLa as their fifth favorite manga anthology, along with Shogakukan's Shōjo Comic and Kodansha's Weekly Shōnen Magazine.