A dark magic to feed on enemy's blood.
Inflict damage to a target and absorb a part of damage dealt as HP. The heal amount depends on your level.

Curse an enemy by sacrificing your life.
Deal special damage using 10% of MaxHP. You will become stunned if HP is not enough.

The power of darkness in your right arm bursts.
Use 10% of the current HP and deal damage. Lower MaxHP for 10 seconds. (Up to 5 times.) If you use Bloody Bite while this effect is active, remove the negative effect and heal HP.

The demon inside rages for blood.
Attack the targets targeting allies. Attack up to 10 targets but damage is distributed. When activated, power increases as your HP is lower and does not generate Aggro.

Hatred turns to tears of blood and takes down foes.
When being targeted by a foe, you start bleeding. If not, reduce Aggro. HP Cost of Dark Energy is removed while it's active.

Even if my life ends here. I shall have no regrets.
Restore all HP. Reduce MaxHP and enhance stats for a few seconds. (Can be overlapped.)
You will die when the effect ends.First-Aid, Struggle, Revive Droplets Unavailable.

My determination got the best of me.
Consuming HP raises the effect (max 10 Levels). Chance to inflict [Fear] on the target.
Get MP Recovery if the effect is raised and wield the hunted soul as a scythe to attack the surroundings.

Katana
Power increases depending on DEX. Chance to inflict Fear drops greatly.

1-Handed Sword
Power increases depending on STR.

2-Handed Sword
[Get the same effect when used with a Halberd] Range (Radius) +2m Chance to inflict Fear drops drastically.

Bow
[Get the same effect when used with a Bowgun] Power greatly drops, but activation is focused on target. Chance to inflict Fear drops slightly.

Staff
[Get the same effect when used with a Magic Device] Chance to inflict Fear drops. MP Heal Amount increases.

Knuckle
Power increases depending on AGI.

Are you living in a dream or a nightmare?
Constantly consume HP to lower monster's defense and enhance Dark Power skills up to tier 3.
Raises Dark Resistance but lowers Light Resistance while active.

All Weapons
Lowered defense amount depends on Dark Power's total level.
Raises max amount healed with Bloody Bite.
Raises Sacrifice's stability.
Raises Dark Stinger's power in proportion to the HP consumption.
Eases HP criteria for maximizing Demon Claw's power.
Red Tear's no. of attacks added.
Adds a slim chance of avoiding regret after Regretless.