Bingjiao Gonglüe Zhinan

Zhao Xun was electrocuted while playing a dating sim, and he was transmigrated into the game world with a Romance System, The system not only lets him see each girl's favorability rating, but also allows him to save-and-reload infinitely, and provides equipment to make him unbeatable at picking up girls. But just when he thought he had it made with the help of the system, the girl he picked up suddenly turned against him and tried to kill him. Fortunately, the heroine Lingyu The Blood-sworn, rushed to the scene and killed the crazed girl to allow Zhao Zhuan to escape…

(Source: Tencent, translated)