Based on the title, this appears to be a request for a review or discussion post about an anime or manga (likely Boku no Imouto wa "Oosaka Okan". Wait, no, checking the specific phrasing "-ENG- 30 Days With My School-Refusing Sister -R...", this usually refers to a specific translated title, often associated with adult visual novels or doujinshi, or potentially the anime My Sister is Among Them or similar "imouto" genre works where social withdrawal (hikikomori) is a theme.
Multiple Endings: Depending on your choices, the game can conclude in several ways, ranging from her successfully returning to school to her becoming further withdrawn. Key Strategies for a Successful Playthrough -ENG- 30 Days With My School-Refusing Sister -R...
30 Days With My School-Refusing Sister - My Unexpected Journey Based on the title, this appears to be
: This is where choices start to matter for specific endings. More intimate or confrontational choices will begin to lock you into specific story routes. Days 21–30 (Endgame) Key Strategies for a Successful Playthrough 30 Days