GAJK-039 Usui Natsume: A Girl Student Tightly Bound and Tortured in Grandpa’s Restaurant

Upon hearing that her grandfather plans to close the Western-style restaurant he's run for years, his naive granddaughter is shocked. Learning he has no successor and is aging, she declares, 'I want to take over the shop, so please train me.' From then on, after school every day, she begins learning cooking at her grandfather's house. The grandfather starts to develop twisted feelings toward his hardworking granddaughter—especially when one day, he catches her in a compromising position after she loses control of her restraints. This is a 'convenience store delivery' featured title.