Incredible! I learned a lot from this, all thanks to Cirno. Would rate 9 stars if it were possible.
Cirno's Math Class
Are you smarter than a Cirno?
Cirno's Math Class is a tiny STG I made for 2022's Cirno Day (9/9).
According to my testing, the web build only works on Chrome. If you use a different browser, please download an executable instead.
This is derivative fanwork of Touhou Project, not affiliated with Team Shanghai Alice.