This keyboard based on HHKB pro 2 and physical layout designed by @hecomi and @takashiski.
This keyboard use 2 pro micro's, but you can use USB type-c. There are a bit tricky implementation.
Keyboard Maintainer: takashiski
Hardware Supported: hecomi_alpha, promicro
Hardware Availability: booth(@skyhigh_works)
Make example for this keyboard (after setting up your build environment):
and build guide is here.