Mangas

ヒロインをめざせ!, Heroine wo Mezase!
The earth is in danger and is about to be invaded by aliens. Misao is a gymnast and a scout witnesses one of her amazing gymnastic routines and asks her if she wants to be a heroine. What did this scout mean by "heroine"?
レッツバリボー! -  Let's Volley Ball
A collection of short stories the centers on what else but volleyball!