Wo De Moshi Daxiaojie

With the advent of the apocalypse, the clan killer Mu Chang had his life trajectory changed and Miss Bai, whom he vowed to protect, turned into a zombie after an accident… Being desperate, Mu Chang planned to give up and end his life. However, the apocalypse system was activated in him in the nick of time. He not only acquired a brand new right arm but also gained an exceptional superpower. More surprisingly, he could use the mechanical arm to control and connect with Miss Bai?! (Source: WebComics)