Overview
- The 105th National High School Rugby Tournament opened on December 27 at Hanazono Rugby Stadium in Higashiosaka with first-round play.
- This commemorative edition features 56 teams, five more than usual, with top seeds such as Toin Gakuen and Osaka Toin beginning in the second round.
- Day one included 10 first-round games, highlighted by previous runner-up Tokai University Osaka Gyosei facing Sakaide Daiichi and debutant Gifu Seitoku Gakuen meeting Chubu University Kasugaioka.
- First-time entrant Nagoya High School is slated to debut on December 28 against Ryutsu Keizai University Kashiwa; the school traces its roots to an 1887 missionary-founded English academy.
- In high school basketball, the girls' final will feature Ouka Gakuen versus Osaka Kun-ei Jogakuin, and the boys' semifinals are set with Fukuoka University Ohori facing Tottori Johoku and Fukuoka Daiichi meeting Higashiyama.