Main Character

Uchu Aki - an unknown swordsman who became a demon slayer, he doesn't wear the uniform of the Demon Slayer, he is a man in his 30s, with black hair with some blue hair, reaching his shoulders, exotic thin eyebrows, and dark-blue eyes.

He had a dual katana on both hands.

Uchiha Aki, wears a black kimono with blue on the edges.

His Breath Technique, Breath of Space has Nine Forms.

First Form - Space Slash

Second Form - Star Wave

Third Form - Dancing Thousand Star

Fourth Form - Trampled Planet

Fifth Form - Shooting Star

Sixth Form - Space Rift

Seventh Form - Charging Meteor

Eight Form - Nebula

Ninth Form - Supernova