Innocent country boy Oyamada Kouta is about to lose his innocence forever. After ttransferring to a big city high school in his freshman year, Kouta quickly becomes embroiled in a world of crazy. First, a beautiful second-year student named Chizuru hands him a love letter. Kouta can hardly believe his luck, but when he meets up with her after class, he gets an even bigger surprise: the busty babe not only has the perfect body–but a set of fox ears and a tail! It turns out that Chizurus is a fox yoikai and she has set her sights on Kouta. Soon, Kouta is spending day and night fending off the frisky fox spirit’s advances. Even worse, he soon learns that his new school hides a shocking secret: it is full of yokai who pose as human students, each with their own agenda! In a dog eat dog world, Chizuru’s foxy love for Kouta may be his only hope.
It’s winter vacation for country boy Oyamada Kouta and his foxy yokai girlfriend Chizuru. Instead of fun on the ski slopes, however, the lovey dovey cross-species couple winds up at a hot springs resort run by Chizuru’s mother, a fox demon herself who is even bustier and more flirtatious than her own daughter. As if this wasn’t enough family drama, a strange little girl named Minori arrives at the resort and insists that Kouta is her big brother. Who is she, and what does she want with Kouta? Between an overbearing mom and a clingy “little sister,” will Chizuru be able to dominate the pack and hold onto her man?
After a spell shrinks Chizuru’s fabulous breasts, Chizuru and company start working overtime to get her curves (and yokai powers) back. They quickly realize that Minori, a shape-shifting young girl who claims to be Kouta’s little sister, is behind it all. For some mysterious reason, Minori is determined to kill Kouta, even if it means destroying the whole world in the process! Will Kouta and Chizuru’s love be strong enough to save her boobs…and the world? THE CLIMAX TO THE FOXIEST SERIES OF ALL!