[Itaba Hiroshi] Can you make an App and a Girlfriend By Yourself? (Mesugao (Hatsujou Hyoujou)) [YxTL]

An aspiring mobile game designer thinks his luck has finally turned when Kasumi, a quiet gamer girl in glasses, starts playing beside him on the first day of school—but her carefully hidden past comes crashing back when rough delinquents from her old life corner her, strip her uniform up over her big breasts, and coerce her stunned new boyfriend into joining as she is fingered, made to suck cock, and passed between them with photos taken as leverage. Trembling but defiant through the forced group session, she endures the worst of it—because Shimizu is no helpless victim, and the moment the thugs gloat over their blackmail, her terrifying self-made app quietly wipes every photo and video from their phones. With her past erased and her suitor still reeling from everything he witnessed, she leaves him blushing and stammering through the only confession that matters.