Unrivaled: Naomi Tenkaichi

Naomi is a Space Tennis player who travels the universe with her family. She admires Sara, the "Queen of the Winds." She decides to participate in the Astro Open, where she can play against Sara if she wins. However, she is confronted by players who are controlled by the power of "darkness"...? Naomi will fight until the end to become the best Space Tennis player!

(Source: Kodansha, translated)