Iwaizumi Hajime and Oikawa Toru were in a long distance relationship. Toru worked in Argentina as a pro volleyball player and Hajime in Japan as an athletics trainer. The long-distance relationship caused a lot of arguments and fights

They decided to get a divorce, but they had a son by then Yoichi. Hajime got full custody while Toru got visitation rights as Hajime would have more time for the kid

The 2 still love each other. And now Toru is back in Japan