In elementary school, Takasugi was the sweeper of Shutetsu, the best soccer team in Nankatsu city. After that, he went to Nankatsu middle school, and became a regular of their soccer team in the 2nd year. Takasugi also has a good vision because he was the only one to notice that Tsubasa's leg was injured in the match against Azumaichi. He was among the best members of the middle school tournament and was selected in the All Japan Jr. Youth team. Although being among the starters at first, he remained on the bench throughout the tournament.