Wakakusa Sayakyu-bu Kyousou Kyoku

is a Japanese light novel series written by Ginga Isshiki, with illustrations by Misuzu Aki. The series began publication on February 10, 2000 by ASCII Media Works under their Dengeki Bunko publishing imprint.

The series won the Silver Prize in the 6th Dengeki Novel Prize.

Synopsis
Mitsuji Nishinomiya, a monster ball child who is said to be alone in 10 years when the summer Koshien was boiled. He quit the prestigious Teito High School and transferred to Wakakusa High School, where four out of nine baseball team members were girls, who couldn't even play in the official game. According to the school's restructuring plan, the weak baseball club will be abolished if it does not win the practice game with Kobe Gakuen one month later. Speaking of Kobe Gakuen, Mitsuji lost in the summer Koshien final. Mitsuji, who was suddenly motivated, appointed Mayumi, who can only throw a Henachoko ball, as an ace and challenged Kobe Gakuen led by his nemesis, the monster batter Matsubara in the west !!