Hono became a recluse after failing her university entrance exams. Apart from going back and forth between her house and the convenience store, she spent her days masturbating to the internet and erotic manga, but she set her sights on her younger brother, saying, "I'd like to lick a dick at least once before I die." Her kind brother, Yuta, responded with the intention of only doing it once, saying, "If that makes you feel better..." However, her sister became obsessed with the taste of dick and started sneaking into her brother's bed almost every night, and Yuta looked back at her smiling face as she happily drank up his semen with mixed feelings... But one day, Yuta invited his girlfriend over to his house and witnessed them having sex, and Hono's emotions were greatly shaken. Even though he was her brother, and they weren't even lovers, and she just wanted to see his dick... she felt intense jealousy and excitement for the first time. "I can't forgive you, Yuta's dick is mine!" Is this lust or love? Wakamiya Hono plays the role of a bro-complex introverted woman who becomes obsessed with her younger brother's dick!