Home Guardsman 1st Mission: Obedient Busty Eldest Daughter Sayaka

Story

My name is Tsunetaka Kareki. A generational live-in shut-in with 20 years of service. Using high-performance PCs and surveillance equipment, I engage in covert operations within this house. And a mission has come my way. Shoko Katsuragi. This female is the mastermind this time. She's my father's remarriage partner, and she's after this house—and by extension, our family's fortune. Otherwise, there's no way she'd remarry such a dull father and live together with me. I have to protect the house from this female. That is this mission. This female's new husband—my father, that is—hardly ever comes home because of work. In other words, this female is illegally occupying this house as if it were her own. And what's more, there are three females in all. An overwhelmingly outnumbered situation. The mother is Shoko. Her daughters are Sayaka and Yuki. The females will move into a new home in five days. Before then, I have to make them realize they never want anything to do with this house or with me again. The first target is... the elder sister, Sayaka Katsuragi!! To reclaim my peaceful days—secret filming, intimidation, sexual training! The live-in shut-in is now deploying!