Breathing

You begin to learn the basics of a slayer, breathing is only the first step on a long staircase. On your turn, you can use Breathing as a bonus action. While Breathing, you gain the following benefits if you aren’t wearing heavy armor:

• You gain a number of temporary hit points equal to your demon slayer level + your Constitution modifier (minimum of 5) for the duration of your Breathing.
• You can use the techniques of your chosen breathing style.
• You regain 1d4 hit points at the end of every turn that you were breathing.
• You have an advantage on Perception checks against fiends and undead.
• Your Breathing may be used a number of times equal to your proficiency bonus + your constitution modifier per long rest, each use gives you 1 minute of Breathing bonuses. It ends early if you are knocked unconscious, have your oxygen taken from you, or you can end it on your turn as a bonus action. Some breathing techniques may end your breathing early.

You regain all expended uses of Breathing after a long rest.

Breathing (Improved)

Starting at 5th Level, while breathing is activated, you gain the additional following benefits:

• Your senses become preternaturally attuned to the scent of demons. While you are Breathing, you're able to detect the approximate number of undead or fiends within 60 feet of you by smell.
• You will now regain 1d6 hit points at the end of every turn that you were breathing.
• Advantage on all skill checks made with the ability score of your chosen combat stance.
• Advantage on saving throws against poison.
• While you have your breathing active your nichirin attacks now count as magical.

Action Surge

Starting at 2nd level, you can push yourself beyond your normal limits for a moment. On your turn, you can take one additional action.

Once you use this feature, you must finish a short rest before you can use it again. Starting at 17th level, you can use it twice before a rest, but only once on the same turn.

Weapon Fighting

Great Weapon Fighting: When you roll a 1 or 2 on a damage die for an attack you make with a melee weapon that you are wielding with two hands, you can reroll the die and must use the new roll, even if the new roll is a 1 or a 2. The weapon must have the Two-Handed or Versatile property for you to gain this benefit.

Improved Critical: Your weapon attacks score a critical hit on a roll of 19 or 20.

Smell Detection

Your nose has incredible smelling, and may alarm you of the smell of specific types of creatures.

First Form: Full Moon

The swordsman attacks with all his rage and strength with a concentrated slash against a creature.

Immediately after a successful hit, you can use a bonus action to deal an extra 1d6 damage to the creature. The amount of extra damage increases as you gain levels, as shown in the last column of the table.

1st Form: Dark Moon - Evening Palace

The swordsman quickly draws his sword and slashes swiftly in a singular horizontal motion in a crescent shape, dealing 2d12 radiant damage within 5 feet in front of him and creating numerous chaotic crescent blades, if using Blood Demon Art. The total amount of damage is doubled, if the sword was drawn from the sheath while performing this technique.

2nd Form: Pearl Flowers - Moongazing

As a reaction, the swordsman performs several crescent-shaped slashes that defend him from incoming attacks, reducing damage by 1D12 and creating a barrage of crescent blades around him, if using Blood Demon Art.

The amount of damage reduction increases by 1d12 in the 5th, 8th, 11th, 14th, 17th, and 20th level.

Moon Breathing

Moon Breathing is a Breathing Style derived from the Sun Breathing. Its focus is on letting your emotions run loose. You don't need any composure or balance with yourself, just let everything you feel destroy your enemy. Using a form decreases your current breathing by 6s. After performing three different forms, the swordsman regains hit points equal to your demon slayer level + your Constitution modifier + your Wisdom modifier.

Breathing save DC = 8 + your proficiency bonus + your stance modifier

3rd Form: Loathsome Moon - Chains

The swordsman swings his sword rapidly in two gigantic crescent slashes, from which a storm of smaller crescents spread, dealing 3d12 radiant damage on a failed Dexterity Saving Throw in a 10-foot radius and creating numerous chaotic crescent blades, if using Blood Demon Art. This technique has 60 feet range and 300 feet during the night.

4th Form: Full Moon

The swordsman attacks with all his rage and strength with a concentrated slash against a creature. Immediately after a successful hit, you can use a bonus action to deal an extra 1d6 radiant damage to the creature and create various chaotic crescent blades, if using Blood Demon Art. The amount of extra damage increases by 1d6 in the 4th, 6th, 8th, 10th, 12th, 14th, 16th, 18th, and 20th level.

5th Form: Moon Spirit Calamity

The swordsman makes 6 curved slashes layered over one another, creating a rising vortex of sword slashes and crescent moon blades dealing 1D12 radiant damage on a failed Dexterity Saving Throw in a 30-foot cone and creating several chaotic crescent blades.