Nanatsu-iro Drops

is a Japanese adult visual novel developed by UNiSONSHIFT and released on April 21, 2006 for Windows. The game was later ported to the PlayStation 2 and Nintendo DS. A light novel, written by Tamaki Ichikawa and illustrated by Noizi Ito, was published by Enterbrain in June 2006. Two manga adaptations were published by MediaWorks (later merged as ASCII Media Works). A 12-episode anime produced by Studio Barcelona aired between July and September 2007.

Plot
Masaharu Tsuwabuki is a normal student, though not very social. One day he meets a new student named Sumomo Akihime, and another girl named Nadeshiko Yaeno, Sumomo's close friend. That same afternoon, he suddenly bumps into Arthur, a servant of Nona Yūki from Figurare who at the time was disguised with a mask. The collision causes Arthur to drop a bag full of magical potions; amid gathering up the scattered cans, one of them is accidentally switched with Masaharu's soda can. Upon drinking it, he transforms into a stuffed animal lamb at night. He must collect seven stardrops, in order to return to normal.