Thanks guys! I always use 12000 grit before 30000 for a mirror finish, I plan to grind some natural stone scraps into powder for cosmetic finishing soon.
Usuba at 30000 grit I can no longer feel the blade cutting food, micro beveling at 30000 feel like 12000 without micro bevel. I often put micro bevel on my usuba to reduce chipping and 30000 grit give me a good advantage on it.
The knives in the photo are Kanetsune seki suminagashi santoku(I think is a AUS-10, bought it 10 years ago as my first knife) and a Mizuno tanrenjo white 2 gyuto.
Here's a Mizuno tanrenjo white 2 usuba and Fu-Rin-Ka-Zan blue 1 single bevel at 30000 grit. sharpening blue 1 is...almost feel if I am sharping an HSS knife, I might get a blue 1 or blue super honyaki to compare with if the suminagasi clad is making me feel it's kind of hard to polish.