A beautiful, fragrant older brother. Just before their wedding, his older sister runs off with another man! Furthermore, his sister's fiancee, Natsuki, who exudes a subtle sex appeal, decides to stay with them for a while, leaving the innocent, virginal high school boy, Chihiro, in a state of complete confusion. The evil hand of the "beautiful older brother," who is actually bisexual, closes in on him, and what will happen to Chihiro's chastity...?! A story of sex and the budding love, written by promising newcomer Sari.