Brought to you by the ultra-erotic production group Rune Pictures, this OVA adapts an NTR-themed comic series originally created by the circle "V-Pan's Ecstasy"! Due to his parents suddenly being transferred for work, Ayato Haruno finds himself living under the same roof as his crush—his older relative, Kasumi Haruno. Ayato studies hard, hoping to attend the same school as her, but he finds it increasingly difficult to stay focused. Then, one day, he happens to stumble upon an adult website—and there, in an explicit video, he spots someone who looks exactly like the woman he adores...