Is It Too Bad to Dress up as the Heroine's Younger Brother?

Su Jinyu grew up in a family that valued girls over boys and suffered a lot. The idea that he has been instilled in him since he was a child is that "the elder sister is the boss". Su Jinyu gave way to her sister, respected her sister, and suffered severe beatings from her sister from time to time. One day, he traveled through time and entered a novel. In a rural family that favored sons over daughters in the 1990s, he had four sisters, each of whom was his nanny, supporting him, pampering him, and serving him. Don't live a happy life. However, a sister was reborn. This is a revenge novel where the heroine is reborn and upgraded, and the target of revenge is none other than him, his scumbag brother. Su Jinyu's body trembled. He made up his mind and hugged his sister's thigh tightly. This is his destiny, "Sister is the boss" Then one day, he saw every woman as a sister. Come to think of it, it's okay to like men. Conception: