I Became Tongtian's Brother

I dressed as an orphan in a fishing village and picked up a younger brother named A Tian. I taught him the principles of life and helped him grow up. Later, when the world collapsed, my brother ascended to the sky and said to me: "Brother, heaven and earth are my teachers, and you are also my teacher. I beheaded the holy throne. Jie Jiao, I should be reborn according to the principles you taught." Later, I found that I seemed to be... Not just me?