Gift eternal rainbow OVA

Gift (ギフト, Gifuto?) is an adult Japanese visual novel developed by Moonstone which was released as a limited edition version on May 27, 2005 playable on the PC as a DVD; a regular edition followed on June 10, 2005. The original game was a collaboration project where the company Circus helped to produce it, though Moonstone did the majority of the work involved. Gift is Moonstone's fourth title, and was followed up with a fandisc called Gift Rainbow-colored Stories released on January 27, 2006 for the PC. A Playstation 2 version named Gift -Prism- was released on October 19, 2006 by Sweets with adult content removed. The gameplay in HoneyComing follows a plot line which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the five female main characters. The story revolves around Haruhiko Amami, a male high school student living in a town where a rainbow is always seen in the sky.

A set of five drama CDs, one for each heroine, was released by Lantis between September 2005 and February 2006. There have been five light novels written, two Internet radio shows produced, along with a manga series serialized in Kadokawa Shoten's seinen magazine Comptiq between January 2006 and February 2007. An anime adaptation, produced by Oriental Light and Magic, aired in Japan between October 2006 and December 2006, containing twelve episodes.

Source: Wikipedia