Am I ripping off this manga?

I love Ao no exorcist too and i wouldn't say you are completely ripping it off. Maybe change it to 2 twin katana's The main character should wear well- you know how in 'blue' exorcist Rin has a fashion that he always wears or in Naruto how they always wear that SAME outfit. Like sasuke is blue and sakura is pink and naruto is orange? Whatever main color your character wears thats what color the flames should be.