Formal Refinement
You have undergone training befitting your house and standing. At 3rd level you do not suffer speed penalties from Heavy Armor. Choose one additional skill, tool, or vehicle to gain proficiency in. Additionally you gain the following Resolve Action.
Honorable Death Only: As a reaction when you would drop to zero hit points you may spend a Resolve to drop to one hit point instead. The Resolve cost of this ability doubles each time you use it during a combat encounter.
Dutiful Loyalty
At level 6 when you roll for initiative choose an allied creature to become your charge. While within 15 feet of your charge if they are targeted by an attack roll you may use your reaction to impose a CHA Saving Throw versus your Brawl Save Dc against the attacker. On a failure you become the target of the attack instead. If your charge would fall to zero hit points you may use your reaction to move your movement speed and make a single melee weapon attack against the attacker at advantage.
Shame on Your House
Running away from an honorable fight is disgraceful. At level 13 once per turn per creature when a creature would provoke an attack of opportunity you gain an additional reaction that may only be used to make a melee weapon attack against that creature. Additionally whenever you are making an attack of opportunity you may spend 1 Resolve to make two attacks instead.
Former Strength
You've reached the strength thats whispered in the same breath as the samurai of old. At level 20 if your charge is below 50% hp you deal three extra damage die to creatures within 10 ft of them. If you are below 50% hp you gain +3 AC and 10 DR. These effects can both be active at the same time and are removed if you or your charge would be restored to above 50% hp.