The Demon Sister Was Released at the Beginning

Introduction: The popular aura recovery system routine, the protagonist's cool story about hanging on the wall... Ahem, the protagonist was beaten very badly at the beginning. Oops, a strange combination of circumstances triggered the ancient seal and released an incredible being! From then on, I started to live a boring life of having soft food but hard work... Oh, no, slapping all the dandies in the face and pretending to be invincible~ This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.