Kuroo has known Kenma ever since they were young; the two of them grew up together since they live nearby the same neighbourhood. They have been shown in flashbacks practising volleyball together when they were kids. Kuroo suggested for Kenma to join the volleyball team in middle school and stay for high school. Around Kenma's first year, he wanted to quit the volleyball team due to the harsh treatment from the seniors, but Kuroo convinced him to stay, telling him that he is an important part of the team and that the rest of their first and second years teammates agree as well. Kuroo also always looks after Kenma; finding him when he was lost during the training camp. In the cross team match game, Kenma has stated that he had never failed a test because Kuroo teaches him before tests.
