The samurai is a fighter who draws an implacable fighting spirit to overcome enemies. A samurais' resolve is nearly unbreakable, and the enemies in a Samurai's path is path have 2 choices: yield or die fighting.

Bonus proficiency

Gain proficiency in one of the following skills: History, Insight, Performance, or Persuasion. Alternatively: learn on language of choice.

Fighting Spirit

As a bonus action on your turn, you can give yourself adv. on weapon attack rolls until end of current turn. When you do so, you can also gain 5 temporary hit points. The number of temporary hit points increases when you reach certain levels in this class, increasing to 10 at tenth level and 15 at fifteenth level. You can use this feature 3 times, and you regain all expended uses of it when you finish a long rest.

Elegant Courtier

Whenever you make a charisma (persuasion) check, you gain a bonus to the check equal to your wisdom mod.

You also gain proficiency in wisdom saving throws. If you already have this proficiency, you instead gain proficiency in intelligence or charisma saving throws (your choice).

Tireless Spirit

When you roll initiative and have no fighting spirit remaining, you regain one use.

Rapid Strike

If you take the Attack action on your turn and have advantage on an attack roll against one of the targets, you can forgo the disadvantage roll for that roll to make an additional weapon attack against the target, as part of the same action. You can do so more than once per turn.

Strength before death

If you take advantage that reduces you to 0 hp and doesn't kill you outright, you can use your reaction to delay falling unconscious, and you can immediately take an extra turn, interrupting the current turn. While you have 0 HP during that extra turn, damage causes death saving throws as usual, and 3 fails kills you. When the extra turn ends, you fall unconscious if you still have 0 HP. Once per long rest.