Here are the Living With Sister: Monochrome Fantasy System Requirements (Minimum)
CPU: Intel Core2 Duo or better
RAM: 4 GB
VIDEO CARD: DirectX 9/OpenGL 4.1 capable GPU
PIXEL SHADER: 3.0
VERTEX SHADER: 3.0
OS: Windows® 7/8/8.1/10
FREE DISK SPACE: 1 GB