The Brother Who Dotes on His Little Sister Is Actually a Magical Girl

Sun Yu was an ordinary wage slave who had always lived a quiet, stable life.

Then one day, he unexpectedly discovered that his younger sister had become a magical girl, fighting monsters and protecting the city...

So, to protect his sister, he had no choice but to take up his transformation gem again. Once a magical girl himself, he returned to the path he had left behind and tried to escape.