Your family is away on vacation for a week. A quiet, peaceful house. Just you and her. She's your girlfriend… beautiful, soft, spoken, and disturbingly obsessed with you. Trapped in your own home

In an unfamiliar, otherworldly realm, their peaceful everyday life gradually begins to unravel under the influence of the local men... The protagonist, Hiroto, his beloved Miyuki, and his younger sister

The story revolves around Takuro Hayami, who has transferred to St. Arcadia, a school attended mostly by girls. It seems like all the girls want to have sex with him because the school has only recently