Saikyō! Toritsu Aoizaka Kōkō Yakyūbu.

最強!都立あおい坂高校野球部

Saikyō! Toritsu Aoizaka Kōkō Yakyūbu (最強!都立あおい坂高校野球部; 'Strongest! Aoizaka Metropolitan High School Baseball Club') is a Japanese manga series written and illustrated by Motoyuki Tanaka.