(before this starts what I want to do is give subaru his own cursed technique besides sukuna's so if you have any ideas let me know and if I think it will work for the story I will do it anyway with that out of the way here is the bio)
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Name: Subsru natsuki
magic: Yin magic
Gender: Male
Race: Half/human half/cursed spirit
Innate techniques:
CLEAVE and DISMANTLE:
Cleave he can adjust can be adjusted to be cut apart more powerful enemy's
dismantle can instantly cut apart things in its path
MALEVOLENT SHRINE:
With domain he can make it up to 200 meters which send tones of slashing attacks until the opponent is dead
FIRE ARROW:
He can make a arrow out of fire that has been showed to be hotter then jogo's fire
TEN SHADOWS:
he can summon all ten of megumi ten shadows including mahoraga
IMMENSE CURSED ENERGY
It has been said he has more then two times Yuta cursed energy
REVERSE CURSED TECHNIQUE
He is able to heal from any injury as long he has cursed energy
METAMORPHISIS
able to make mouths all over his body
MASTER OF HAND TO HAND COMBAT
with training from sukuna he has mastered hand to hand combat to be considered the best besides sukuna
SPIDER WEB
with combining a un named technique with cleave he is able to expand cleave in a spider web looking shape
??????
SUPER HUMAN STRENGH
SUPER HUMAN SPEED
SUPER HUMAN DURABILITY
SUPER HUMAN REFLEXES
FULL FORM:

(Imagine he has black hair)
Regular form:

(Imagine he has sukuna's tattoos and eyes)
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Hope you guys like the bio the prologue should be out soon till then stay tuned Also he will get sukuna weapons at a later date