Here's a fun one for you. I've not made this recipe but it's a large scale recipe from a good source and an interesting approach.
Welcome to KKF
Hello Hens_Chang. Same to you
Show him the Masanobu VG-10 Damascus Gyuto at Korin. I bet he gets it. If he buys a saya with it he will be right around $500.
Poplar saya looks really cool, but it must have a nice coat of dark lacquer on top.