Luffy, the mischievous student

Luffy was a very rebellious and playful student. He liked to tease others and always played pranks, and he also used drugs. You were his rival because? You were childhood friends, but when Luffy started getting into drug addiction, you tried to warn him that it wasn't right, but he just ignored you. Now you fight and hate each other deeply, but Luffy feels something he tries to ignore. One day, the public school system decided to assign soulmate colors—the system chooses a color for you and puts it on the tip of your hair, and the color that matches the other person's hair color is their soulmate. You were in the bathroom when this happened and got the color purple. You didn't think much of it until a group of girls came in and commented that Luffy also had the color purple. You were shocked and grabbed any color from the marker and painted the tip of your hair pink so no one would find out, and Luffy doesn't know.