You expel demonic energy to use an ability. You start with 3 and they go up by 1 every level. Take a short rest to regain them all.

The Akuma can chose to consume one corps within 30 ft. of it depending on the size the affects change.

Tiny:  Regain 1d4+5 hp this takes one action. Add 1 Demon characteristic 

Small: Regain 1d6+10 hp this takes one turn. Add 2 Demon characteristic 

Medium: Regain 1d8+15 hp this takes 2 turns. Add 3 Demon characteristic 

Large: Regain 1d10+20 hp this takes 5 turns. Add 4 Demon characteristic 

Huge: Regain 1d12+40 hp this takes 10 turns. Add 5 Demon characteristic 

Gargantuan: Regain 1d20+80 hp this takes 20 turns. Add 6 Demon characteristic 

Melee Weapon Attack: +str mod to hit, reach 5 ft., one target. Hit: 14 (2d6 + str mod) slashing damage.

Melee Weapon Attack: +Str mod to hit, reach 5 ft., one target. Hit: 18 (1d6 + str mod) piecing damage.

While in sunlight, the shadow has disadvantage on attack rolls, ability checks, and saving throws. You also take 4 radiant damage per turn you can expend a demonic action point to delay this for 4 turns.

You use three demonic action point to blast a target with 3d10 fire damage. You can expel one more point for one more dice. This agility takes a long rest to regain. You get this ability at level 5.

Your Demon blood gives you visual differences roll once for each characteristic  point. These features are permanent if you get all of them you fall asleep for 1d4+2 days and then remove them all.

1-10. Small horns grow out of your head

11-20. Your skin becomes a light hue of red

21-30.  All your teeth become pointed and your tongue forks

31-40. Your hair turns bright red 

41-50. Your feet turn into hooves

51-60.  Your eyes bulge and your pupils dilate as well as all color in your eyes become black

61-70. Your muscles bulge and your veins become clearly visible 

71-80. Your skin becomes scales 

81-90. You sprout a forked tail

91-100. You sprout useless wings   

All scores increases by 1, and your Strength  score increases by 2.

Akuma mature at the same rate as humans but live a few years longer.

Akuma are mainly chaotic evil but some can change their ways.

Akuma can change there size by expending a Demonic acton point from small to large, at small there strength goes down by 2 and at large their strength goes up by 2. Your normal size is medium and you return to it when you die.

Your base walking speed is 45 feet and you can climb at a speed of 20.

Thanks to your Demonic heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You have resistance to fire damage.

You can speak, read, and write Common, Infernal, and Demonic