Michiru Mayumura
Michiru is one of Daigo Shigeno's key rivals, first showing up during the Little League Arc in Major 2nd. She's the youngest of the Mayumura twins—born alongside her brother Wataru to parents Ken and Shizuka Mayumura. The two siblings are basically the same age, which is pretty rare in anime/manga family setups, and fans often note how their twin dynamic shapes their competitive edge against Daigo and the other kids in their league.
Content compiled by AnimeList.moe from publicly available sources.
