ALU BOLT purchased directly from LAZY DESIGNER. It's remappable with QMK, VIA, Vial, etc., and is hot-swappable. I bought it for 40,000 yen at the time, but as you can see in the photos, I've scratched the back, so I'm selling it at a reduced price. The keycaps are PBTFans PYGA, and the switches are Akko v3 cream yellow.