Awakening Dual Powers: but What Is This White Hair and Red Eyes?

The city of superpowers is coming, and the boy awakens two superpowers, one weak and one strong. The weakest power seems useless, but the strongest power will force him to turn into a beautiful girl with white hair and red eyes. The stronger he is, the more he will permanently lose his male identity. On one side is the self that can never go back, and on the other is the sister who must be protected. Between the collapse of his identity and the obsession to protect him, he is caught in a desperate and hot struggle.