Ronin
You have cast off any ties you have to a master and have become a Ronin. Your sense of honor remains, but falls under no man's control. You are your own master and your fighting style has evolved to show this, allowing you to weave through battles with ease.
Features
Hissatsu: Gyoten
At 3rd level, as an action you may spend one charge of your Sen to charge a target creature with lightning speed. Select a creature within 30ft. of you and move in a straight line towards them, stopping if you come in contact with an obstacle. This movement does not provoke attacks of opportunity. After doing so, you may make one melee weapon attack with advantage.
You must travel at least 10ft. to gain advantage on the attack.
Rascally Vagrant
At 6th level, you have picked up some tricks of a thief in your travels. You gain proficiency in two of the following skills or tool set: Deception, Sleight of Hand, Stealth, or Theives' Tools.
Hissatsu: Yaten
At 10th level, as an action you may spend one Sen charge to deliver a parting blow on a creature. You make a melee weapon attack with advantage. After making your attack you move straight backwards 10ft. without provoking an attack of opportunity.
Yukikaze
14th level, you've learned to discern holes in your opponents guard, allowing you to make more effective strikes. As a bonus action, you may spend one Sen charge to add your Wisdom modifier to your weapon attack rolls until the start of your next turn.