Beginning: It Starts with My Sister Being Chased by a Weirdo.

Su Xiaofan and Su Mengmeng are brothers and sisters. In a world where weirdos are rampant, her sister is everything to Su Xiaofan. It started with my sister being chased by a weirdo. After awakening, the system becomes stronger by killing monsters. As long as you kill monsters, you can get the mutation factor. With the mutation factor, you can strengthen your own attributes. You can touch me, but my sister? I'm going to fight you tooth and nail! Hero levels from high to low: S level, A level, B level, C level, D level Monster levels from high to low: god level, dragon level, ghost level, tiger level, wolf level This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.