: The game includes over 400 CG illustrations, time management gameplay across a 30-day in-game limit, and multiple endings based on your interactions.
インストール／導入
アンインストール
| Symptom | Likely Cause | Fix | |----------|--------------|-----| | (Windows) | Visual C++ Redistributable not installed. | Install the latest Microsoft Visual C++ 2015‑2022 Redistributable (x64). | | Black screen or “Failed to initialize OpenGL” (macOS/Linux) | Out‑of‑date graphics driver / incompatible OpenGL version. | Update GPU drivers; on Linux, install mesa-utils and ensure OpenGL 4.5 is supported. | | Missing character portraits after installing Umeru | Expansion files placed in wrong folder. | Ensure UmeruMesutachi/data/ is inside the main game folder, not nested one level deeper. | | Crash after loading a save | Save file from an older version (pre‑expansion). | Load the save, then save again after the patch – the game will convert the file format. | | Performance lag on low‑end hardware | High‑resolution textures from Umeru are taxing the GPU. | Open options.cfg → set TextureQuality=Medium or disable the “HD Assets” toggle in the settings menu. | koumijima shuu 7 de umeru mesutachi install