Older Brother of Future Gohan (Male Reader x Dragon Ball Z/Super)

Hi! My name is Son Kuzuku the older brother of Son Gohan and the son of Goku and Chi-Chi in the Future Timeline where peace is destroyed by the Androids as Gohan and I were the only survivors as the rest of the Z Fighter have died and so do our father who got the heart virus making him unable to fight as he died as well. So Gohan and I kept training until we became adults, we train Trunks the son of Bulma and Vegeta, but tragedy struck as the Androids attack the city making me and Gohan defend, we almost defeat them, but luck run out and Gohan died in front of my eyes as I managed to with a left arm is gone. So for the next three years, me and Trunks went to the past to change the outcome and change our future.