Revenge: It Begins When My Sister's Blood Is Drained

The protagonist is only out for revenge. He isn’t insane, so if you think he kills everyone he meets, read with caution. Since justice came too late, the protagonist will deliver it ahead of schedule. [Feel-Good + Revenge + Face-Slapping + Neither Good nor Evil + Underground Cavern Mysteries] I’d sooner betray the whole world! You all deserve to die. “Your sister’s death is suspicious.” As soon as the woman finished speaking, Teng Zhe flared up like a beast with its fur raised, eyes wide as he glared at her. “What~ did~ you~ say!” The protagonist, Teng Zhe, risked his life to obtain a blood pearl, yet still couldn’t save his sister. He never expected her death to be part of a conspiracy. Her blood had been drained just to save a beast??? In an unjust world, I’ll become an avenger. You want to live? Sorry, why should I let you? “Little sister, not one person who hurt you will get away. I’ll fulfill your wish, too.” But as he pursues his revenge, all kinds of strange incidents arise. Are the underground caverns gateways to another world? Have strange changes begun appearing in human bodies? The Avenger System upgrades, and the bare-fisted fighter gains the power to control the elements. Fire? Ice? Gales? Thunderbolts! Watch Teng Zhe uncover the source of the bizarre virus, travel through underground caverns into another world, and slaughter all manner of monsters, demons, supernatural creatures, evil spirits, and false gods.