Tokyo Swastika Avengers: What Should I Do If My Idiot Brother Always Wants to Be Someone Else's Younger Brother?

I, Kurokawa Tsukiyomi, have white hair, purple eyes, and black skin, My idiot brother, Isana Kurokawa, and I look almost identical. However, my Oppai is bigger than his, hehehe As you can see from the title, after my idiot brother met this man Sano Shinichiro, he gave half of the part of his heart that was occupied by his family to him. Woo hoo hoo, that's the part that belongs to me. So far, I, Kurokawa Tsukiyomi, I, Tsurucho and Sano Shinichiro share the world in Isana's heart... The most terrifying thing about brother control in this world is that your brother is also a brother control! ? ! So, my stupid brother always wants to be someone else's brother, what should I do? Correct answer, I also want to be someone else's sister *^_^* Purpose: After having relatives connected by blood, is it possible to ignore the fact that family members must be connected by blood?