I competed with a Sekisar for the amount of miscellaneous knowledge in the city of Osaka!

↓ See also the video of the integral circle! ↓↓.
@sekibun_circle
↓Another collaboration video.
Osaka University's Integral Circle and I had a quick math IIB solving duel for the common test!
• 大阪大学の積分サークルと共通テスト数学ⅡB早...