Summer Koshien - One of the highlights of summer in Japan. The official name of the tournament is the Japanese High School Baseball Championships, where all baseball players across the nation strive for and dream of playing in. On this day in 1915, the 1st Japanese Middle School Baseball Tournament was held in Toyonaka, Osaka. This day, August 18th has also become High School Baseball Day. Today, the name Koshien has established, but it all actually began in Osaka. Today, we have a feature on illustrations depicting the sweat, blood and tears of baseball youths.