Base Class: Fighter
Those who decide to study under the Accompanied by Three will hone their bodies and blades skills to some of the strangest of traditions from far away lands. These fighters rely more on strength instead of intelligence however, what is lacked in intelligence can be made up for in intimidation. These fighters will always be found wielding three blades. These fighters also have what is known as a serpents tongue allowing them to tap into some spells. They do not know retreat and bare all scars on the front side of their bodies. As their master would quote "A scar on the back is a shame for a swordsman."
Two Blade Style
You become one with your blade and decide to pick up another one with your off hand. You start studying the Two Blade Style of fighting thus opening a new world of possibilities. This allows you to make two attacks per turn and a bonus action.
Serpents Tonuge
The serpents of the past time have blessed you with their tongue thus allowing you to tap into the dark magic that flows inside you body. You are now able to access Bard spells and are able to add 2 cantrips and 1 spell into your arsenal. You also gain a proficiency in intimidation or deception.
Three's Company
Two blades now feel normal to these fighters so they decide to pick up the Three Sword Fighting style in honor of the master who taught them. This allows the fighter to use a sword inside their mouth to block incoming attacks and still leaving both hands free to attack. Both the fighter and the attack roll a STR saving throw to see if the attack is blocked. If the fighter is beat in blocking the fighter takes an additional 1d4 damage.
Jigoku Charm
The king of hell gives you a gift or maybe its a curse we are not truly sure. You gain resistance to necrotic damage but you also become weaker to radiant damage. All radiant damage based attacks deal an additional 1d6 damage.
Gift of the Oni
After falling to 0 HP an Oni appears before you and breaths life back into your lungs. You gain 1d12 temp HP after one turn. You also tap into the dark magic again and are able to now use 3 cantrips and 2 spells from the Bard spell list.
I think Zoro got lost again.