@ssppiikkeeyy Obviously, 5 of the SP on each Tree would go to High Level Bonus; from there, you get to have some liberty on what to do since it already has all of the damage multipliers you would need as a Katana-only Braver.
If you are willing to use a Skill Tree Reset (or are starting off fresh), you can actually save some more points on the Braver Tree by getting rid of the Stance Critical Skills since Braver Combination gives you an unconditional +50% Crit Rate (combined with natural Crit (+5%), a Crit Strike Ring (+20%), and Fury Critical (+25%), that puts you at 100% Crit Rate at all times, and 150% when Katana Focus is released); that gives you 28 SP to put where ever you want on the Braver Tree.
Personally, on the Hunter Tree, I would just finish maxing Flash Guard 1 and Perfect Fury Bonus, though you could also put those points into Stalwart Spirit like the original guide had.