Description about default keymap

layer 0 -- QWERTY layer

layer 1 -- Numpad layer

layer 2 -- Function key layer

layer 3 -- System utility layer

VIA Enabled

'willow64_rev2_default.hex' has VIA enabeld.

VIA is available here
- https://github.com/the-via/releases/releases/tag/v1.3.1
VIA config file for willow64
- https://github.com/hanachi-ap/willow64-doc/releases/download/releae01/VIA_keymap_wllow64.json

see also （初心者編）VIAを使ってキーマップを書き換えよう

maniac

Keymap that the author regularly uses:

https://github.com/hanachi-ap/qmk_firmware/releases/download/rev02-1/willow64_rev2_hanachi_custom.hex