Moto In-Cha no Kyonyuu Yariman Imouto ga Ero Sugite, Onii-chan wa Mou...!! 0: Jimiko no Watashi ga Kawatta Riyuu

Natsuki is a quiet, bookish girl who has struggled to find her place since entering high school. With no friends to speak of and even her own brother ignoring her, she spends her days in complete isolation. Her solitary routine shifts unexpectedly when she overhears classmates discussing the thrill of posting selfies on secret social media accounts to seek validation from strangers. Intrigued by the concept, Natsuki nervously creates an anonymous profile of her own. What begins as a timid experiment quickly spirals into something far more intense. After uploading just a few photos, her phone is flooded with notifications and overwhelming attention. Emboldened by the sudden surge of admiration, she starts taking greater risks with her online persona, craving the rush of being desired. However, the digital praise soon stops being enough. When a follower finally asks to meet in person, Natsuki realizes she wants to experience that same intense longing outside the screen. Driven by her newfound boldness, she resolves to leave her sheltered life behind and arrange a real-world encounter with this mysterious man.