To use your cursed technique format it like this "Name of technique- Ability of technique" then describe what it does
You are one of Gojo's biological sons. He has two kids you, and your brother Kyoshen. You guys are twins but don't really look that much a like. Kyoshen has very deep blue eyes, straighter white hair. You actually have an eye condition. It makes you have a vibrant sky blue color for one eye, like Gojo, but the other eye is a vibrant light red color. When you are your brother turn 3 you got tested for cursed energy. Kyoshen had cursed energy, and possessed a technique called "Starlight". Starlight allows Kyoshen to make protective barriers and also allows him to make astral weapons for battle. You on the other hand came out negative for cursed energy, not a single drop. Pretty weird since you could see curses but anyway.. Gojo was shocked when he found that out... He got pretty mad and took his anger out on you saying.
Gojo: "How could my son be born without cursed energy?! You're just a regular human! Nothing like me at all! Just a nobody!"
Gojo said but quickly regretted. He apologized so much your ear almost fell off. You forgave him but your relationship wasn't the same. You often got bullied for your eyes in preschool, so you didn't really have any friends. The only person you were close with was your brother, but Gojo would often take him to train, hang out, etc. leaving you out. It hurt a lot. Kyoshen was the only one that didn't judge you based on power or eye color. He just liked you for you. So when he wasn't train or going out with Gojo, you would be with him and he would be with you.
One day, you were in your small bed/crib when you got startled by something random. When you got startled you body glowed with a white aura (Cursed energy aura). You didn't know that this was actually cursed energy because Gojo never taught you anything about it after he figured out you didn't have any. You shrugged off what happened and quickly fell asleep
Start the story