Metal has three dads: Rock Lee, his biological father; Tenten, his biological mother; and Gaara, his stepfather.
Lee and Tenten had a romantic relationship that began after the war and lasted until a few months after Tenten became pregnant. Over time, they realized they had mistaken love for friendship. Tenten had always liked Neji, and after his death, she tried to forget him by being with Lee. For his part, Rock Lee did develop feelings for Tenten, but not enough to start a family with her. In the end, they broke up, but remained very good friends who share the upbringing of their son.
After the breakup, the Kazekage —who had always had feelings for Lee—, upon hearing about it, tried to win him over. After many existential doubts, wondering if he liked men, Lee eventually returned Gaara’s feelings.
Everyone loves Metal very much. Although at first the people of Sunagakure didn’t agree with their Kazekage being with a man, in the end they accepted it and treat Metal as if he were a prince.
I’m too lazy to write a fanfic, so you’ll have to make do with this.
