The Naughty Older Sister Next Door, also known as '隣のえっちなお姉さん,' is a captivating Japanese web novel that follows the story of an herbivorous virgin protagonist who embarks on a quest to lose his virginity to the alluring older sister living next door. Despite the challenges presented by the woman's existing boyfriend, the novel delves into themes of desire and temptation within the adult genre, making it a compelling read for fans of male protagonist narratives and titillating encounters like paizuri.