Satani Kasumi Can't Live Without You

A visual-novel and training simulation hybrid set in a remote fortress along a quarantine wall erected to contain a mysterious disease. For two years, you have maintained a solitary routine of guard duty and survival rations. That changes when Satani Kasumi, a woman fleeing to the fortress, arrives seeking shelter. Despite her precarious situation, she insists on caring for your health and wellbeing, gradually transforming your isolated existence into an unexpectedly warm domestic life. The game focuses on deepening your relationship with Kasumi through daily interactions across three relationship levels, each offering multiple branching dialogue choices that reflect her mood and growing familiarity with your requests. A comprehensive dress-up system provides 11 clothing types, 3 loungewear variants, and 19 underwear options to customize her appearance. Core gameplay revolves around intimate encounters, structured as a training simulator with 90 distinct commands that unlock dynamic dialogue based on Kasumi's condition, worn items, and adaptation to your preferences. The experience blends narrative progression with sandbox-style freedom, featuring multiple endings and increasingly intimate scenarios.