I Absolutely Refuse to Be the Magical Girls' Big Sister!

As she lay dying, his mother entrusted Yun Xin with a blue gemstone pendant and told him all the secrets hidden on the other side of the world.

Yun Xin thought his mother was just babbling in her delirium, but he kept the pendant close as a keepsake anyway, until one day it began to shine with a dazzling light...

So his mother hadn't lied to him!

There really were magical girls in the world...

But why could a guy like me become a magical girl too!