Yu Suzuki just emailed backers the specs for the PC version:
Otherwise modest specs. I'm guessing a lot of that 100gb is going to be dual language support.
Minimum: OS:
Windows 7x64, Windows 8x64, Windows 10x64 (64-bit OS Required)
Processor: Intel Core i5-4460 (3.40 GHz) or better; Quad-core or better
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GTX 650 Ti or better (DirectX 11 card & VRAM 2GB Required)
DirectX: Version 11
Network: Broadband internet connection
Storage: 100 GB available space
Sound card: DirectX 9.0c compatible sound card Additional Info: Requires Steam Client to activate.
*Game is currently in development so system requirements may change without notice. We thank you for your understanding.
Otherwise modest specs. I'm guessing a lot of that 100gb is going to be dual language support.