The End of the World: My Cute Little Sister Has Incredible Fighting Power

[Zombie apocalypse] + [Rebirth] + [System] + [Brother controls sister (non-relative)] + [Single female protagonist] + [Decisive killing] Su Chen's dependent sister Su Xiaorou was abducted by a group of mysterious people before the end of the world. After years of fruitless pursuit, Su Chen was killed by a corpse king. He thought he would never see his sister again in this life, but for some reason, he was reborn on the eve of her abduction and awakened the system, giving him a chance to do everything over again. In this life, Su Chen vowed to protect his sister, and his more than twenty years of experience in the apocalypse gave him the confidence to do so. I thought it would be a plot about an invincible flirt with a girl, but... The style of painting has deviated by hundreds of millions of points. Su Xiaorou: Anyone who blocks my brother will die! Su Chen:...... What should I do if my sister's fighting prowess is incredible? Waiting online, very urgent. (Reminder from the front row: In the early stage of this article, brothers and sisters started to complement each other in strength)