All Japan University Baseball Championship
全日本大学野球選手権大会
The supplied FAQ describes this as one of the two national tournaments, with champions from the registered leagues participating.
DAIGAKU YAKYU EN
Tournaments
National championships and Samurai Japan
TOURNAMENTS
Major tournament pathways
The FAQ source identifies two main national collegiate tournaments. This template also reserves a section for Samurai Japan international tournaments.
Meiji Jingu Baseball Championship
明治神宮野球大会 — University division
The supplied FAQ describes league champions entering through direct qualification or regional representative tournaments, depending on the league.
Samurai Japan
International tournaments involving Japan's collegiate representatives.
Detailed tournament history is intentionally left open for later source-based expansion.