[Must-see for all baseball lovers]

Osaka Toin
Introducing the OB quiz app!

It is a high school that every high school baseball fan knows. Osaka Toin is in a state of unrivaled nationwide. It is one of the teams that produces many professional baseball players and attracts high school baseball fans every year.

A professional baseball player from Osaka Toin High School
I created a quiz app.

[Recommended for people like this]

・ A big fan of Osaka Toin
・ I love high school baseball
・ I love professional baseball
・ All baseball lovers

We have everything from simple to difficult problems, so please try it out!