"Will this let me join you...?" The plain and quiet, feminine girl, 'Nanami,' was practically invisible, no, even less than air. "I don't want to be ostracized." For this sole wish, she chose the means of 'connecting with her body.' After school, she performed oral sex on the sunny girls in her class. She engaged in submissive sex in the gym storage room. She had sex with a senior with a huge penis while wearing a swimsuit. She participated in a 4P sex session with the sunny girl group. Originally an invisible girl, she grasped her existence through 'sex.' A youth too sad, too lewd. Having sex with the sunny girls meant she wouldn't be lonely. Being hugged by a senior made her smile. To avoid being alone, she completely became an absolutely submissive sex toy. Nanami's "search for a sensual sense of belonging" began.