Start invincible from killing a vampire

[Original world, invincible at the beginning, pseudo-infinite flow]Traveling through half a year, the weather was calm, Xia Ye originally thought that Yuan Xing was a normal world.But what happened to encounter a vampire on the first night of summer vacation?"Give me a death!"And so, the vampire died."It has been detected that the host has encountered a demon, and the god-level demon-slaying system is being activated...""Activate your uncle! I won't come out when I meet a vampire, but it will be useful to come out! Let me destroy it!"So, the system exploded."The Dimensional chat group sent out an invitation to join the group, do you agree?""You can have this, agree to join."Makoto Daiko: "Xia Ye, Gatanjae has become twins, please help!"Xiaoniaoyou Liuhua: "Brother Xia Ye, there is an evil time traveler on my side, it's so scary!"Battlefield Heiyi: "Mr. Xia Ye, the king of weirdness is going to destroy the world. Can you come and stop her?"Koloss Linxi: "Mr. Xia Ye, the floating city has appeared, Liber's national guide power has stopped, and the Erebonian Empire wants to take advantage of the fire, please help me!"Tony Stark: "Brother Xia Ye, the director of the Women's Federation of the Universe is here, come and help me beat him up, the Infinity Gauntlet is yours."Bruce Wayne: "Summer night, Clark has turned black, can you wake him up for me?"……Xia Ye: "No problem. Leave it all to me!"Everyone: "It's cool to have a boss in the group, you can lie down!"