Ronin

Those who follow the path of the Ronin are those seeking redemption. It doesn't matter the crime, though it's usually serious Ronin are lonely figures, who desire to atone for some great wrong. Rarely those who follow the path of the Ronin do so to truly test their skills as a swordsman. The way of the Ronin teaches martial skill in the shape of sword katas, Ronin rigorously train their bodies an minds to be one with the sword. Their elegance is unparalleled, the true masters of the form can strike enemies down with a single blow. Some consider them little more than bandits and some do indeed fall into darker paths, but most still follow the teachings of budo, that teaches that the first enemy you defeat must be yourself.

Most Ronin have failed their lords or masters in someway, be it in failing to protect them from an assassination attempt or some other dereliction of duty, some of the more unfortunate warriors who walk this path may have simply, accidentally slighted their lords and as punishment were banished. Those who walk this path seek, at least in the beginning a way home. But it is common for Ronin to solace in the way of budo, as they seek out greater and greater challenge they embrace the path they walk.

Kage-ryu

Kage-ryu is the study of the art the sword. Ronin train in such techniques specialising in a single curved sword with a long handle. 

Though these swords are held with two hands and deal 1d10 + dexterity modifier damage, the dueling fighting style can be applied to them, additionally when you make an attack action with this sword you can make an additional attack as a bonus action.

You learn several types of attack as part of the Kage-ryu, these attacks are fuelled by your wrath points. At 3rd level you learn the following skills.

Shadow Form.

When fighting in shadow form you can pay 1 wrath point to gain resistance to bludgeoning, slashing and piercing damage.

Shunpo.

You gain an additional 10ft of movement.

Also known as the flash step, for 1 wrath point you can take the dash or dodge action as a bonus action.

Ia-Draw. 

You can spend 1 wrath point and your reaction to sheath your weapon and move up to half your movement speed, this movement does not provoke opportunity attacks, if you move within 5ft of an enemy you can draw your sword in an Ia cut and make a single weapon attack at advantage.

Heaven's Shadow.

You can spend 1 wrath point to replace an attack with a heaven's shadow strike. Raising your blade high above your head you strike down with tremendous power. You take a -5 penalty to hit but deal an additional 10 damage.

Way of the Ronin

As you walk the way of the Ronin you move with startling speed cutting down foes like a river cuts through rock. Whether its a representation of you shame, loneliness or anger you are gifted with a sword but this sword is not like others, deep inside it dwells a spirit, a kami.. This being can be a silent partner or a vocal one, it is up to you and your DM to decide.

You begin with a pool of three ability points known as wrath, you earn a wrath point every time you make a successful attack or score a critical hit. You add another point of wrath to your pool every 3rd level. Wrath cannot be stored and resets to 1 point every short rest.

Those who walk the blade path, seem to sense danger and their minds are exceptionally strong, as a Ronin you were also stripped of your ancestral armour and learned to defend yourself without it. While you are wearing no armour and not wielding a shield, your AC equals 10 + your Dexterity modifier + your Constitution modifier. 

You cannot be disarmed unless you willingly give your weapon up. At 3rd level you begin to exert a spiritual pressure, it is undetectable but has an effect on how people perceive you. You can add your constitution modifier to any charisma check.

Destroy Missiles

Starting at 3rd level, you can use your reaction to destroy the missile when you are hit by a ranged weapon attack. When you do so, the damage you take from the attack is reduced by 1d10 + your Dexterity modifier + your fighter level as you slice through the projectile.

Heaven's Blade

Starting at 7th level, your strikes count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.

Zanpakuto.

Your bond with your weapon strengthens, over the course of a long rest you can feed your weapon a magic item. While the base damage of your blade does not increase all other magical properties such as +1, flametongue etc. can be absorbed. The original magic item is destroyed in this process.

Advanced Shunpo.

Your movement speed increases by 10ft, you master the shadow step, you no longer provoke opportunity attacks whenever you move. Additionally when you spend a wrath point to take the dash action you can make an attack as part of this dash. You are no longer effected by difficult terrain.

Iron Mind

Starting at 7th level, your connection to the Angel within your blades strengthen you mind, you can use a wrath point to end one effect on yourself that is causing you to be charmed or frightened.

Ronin are outcasts, they have become adept at hiding or charming their way through society, they get advantage on stealth and deception rolls. However the notoriety of a Ronin's shame can work against them, any check made against the Ronin to discern his true history can be made at advantage if the person making the check might have knowledge of the Ronin's past.

Kido

Kido is a form of combat magic powered by a Ronin's spirit. At 10th level you gain access to some of these spirit Arts. The save DC = 8 + your proficiency bonus + your Constitution modifier should any Kido require a saving throw

Hainawa-Slithering Rope.

Hainawa binds enemies with a spiritual rope. As an action you can spend a wrath point as you raise two fingers vertically and perform a circlar motion, the target must succeed on a strength saving throw or become restrained until the end of the Ronin's next turn. The bindings of these ropes are so strong that they cannot be escaped with teleportation magic.

Daichi Tenyo-Upturned Earth.

Daichi Tenyo is a reaction by spending 1 wrath, the Ronin clenches a fist and raises it to the sky pulling lumps of earth and stone from the battlefield surrounding the Ronin with floating masses of material, all attacks are made a disadvantage until the start of the Ronin's next turn.

Zangerin-Cutting Flower.

For 2 wrath points and a bonus action the Ronin can use the Zangerin Kido. The Ronin creates the symbol of a crescent moon cutting his blade through the air. For the next minute you can add an additional 1d6 weapon damage to your attacks.

Itto-ryu

Itto-ryu further enhances the art of the single sword style, incorporating, unarmed strikes such as kicks and elbows into a single fluid combat art.

Awakened Zanpakuto.

Your bond with your blade completes, as such your weapon attacks now deal 2d6 + dexterity modifier. as you punctuate your attacks with body blows and channel your immense spiritual pressure into your strikes.

 Petal Scatter.

Whenever you hit a creature with a melee weapon attack, you can pay 2 wrath points to knock them off-center somewhat, stealing their attention and covering for those around you using aggressive tactics. Shadowy petals scatter from your sword, distracting your enemy, when these petals land on your opponent they cut deeply. As long as that creature stays within your attack range with that weapon, until the end of your next turn you and your allies can attack at advantage and can roll 1d4 and add it to the result of any damage rolls they make against them.

Wrath of the Heavens

Unleash the power of a Master Ronin. Your spiritual pressure combines with advanced Kido techniques and the keen edge of your blade in complete harmony.

Advanced Kido.

You gain access to additional techniques, additionally all Kido can now be used as a bonus action if it previously cost an action.

Danku-Splitting Void.

As a bonus action you can spend a wrath point. You clap your hands together as the noise echoes, a shimmering barrier appears in front of you. You gain resistance to magical damage until the start of your next turn.

Geki-Strike.

As a bonus action you can spend 2 wrath points. The Ronin draws a deep red symbol in the air, the symbol appears on your targets forehead, they must make an intelligence save or be paralysed until the end of your next turn.

Sword Master.

Swallow's Cut to Ia draw.

You gain a second reaction, this can be used to only perform the following reaction. You leap backwards 10 feet cutting horizontally and sheathing your sword then you move quickly forward into an Ia Draw. This reaction can only be taken when a creature with 5 feet misses you with an attack. Make an attack roll at advantage and add your proficiency bonus to your damage rolls.