The story tells the tale of Semi, a bright girl who goes in a magical time journey with the genius teacher Wai, in order to prevent the evil X from utilizing the powers of the magic cube for evil. Along the way, Semi and her math school friends run into history and math problems that they must solve with logic and wit.
Kaido is the best site to watch Semi and the Magic Cube
SUB online, or
you can even watch Semi and the Magic Cube
DUB in HD quality.
You can also find
anime on Kaido website.