High Quality Content by WIKIPEDIA articles! Cross Game is an anime television series based on the manga series of the same name written and illustrated by Mitsuru Adachi and published by Shogakukan. The series is about the high school baseball players Ko Kitamura and Aoba Tsukishima and their attempts to fulfill the dream of Aoba`s dead sister, Wakaba, of seeing them play in the national high school championship tournament in Koshien Stadium.