Traveling Through Thousands of Worlds, but Raising a Sickly Sister

At the beginning, the earth was wiped out, and the system's emergency response forced him to travel to the Seven Kingdoms of Spring and Autumn. In order to find the murderer who wiped out the earth and take revenge, with the help of Tianyuan technology system, you started traveling through time and space again and again! Increase attribute points, maximize skill points, upgrade technological robots, and enjoy the violent aesthetics from technological civilization! [The first time you travel, you come to the Seven Kingdoms of the Spring and Autumn Period] [For some unknown reason, the way of heaven in this world slowly took shape] [This world is not peaceful. There are internal fights between big families, wars in the seven countries, monsters eyeing you, peasant uprisings...] [The arrival of the era of great turmoil has made killing, sacrifice, and rebellion commonplace] … [The second time you travel, you take your adopted sister to a world infected by zombies] [You have entered the empire of order, which is known as rich, powerful, equal, and just.] It's not as peaceful as you think [It seems to have an unknown secret] … [The third time, you traveled to the Ghost Dormitory] … As your technological civilization improves, you discover more and more incredible secrets. The origin of the system, the secret of the parallel universe, ultra-latitude creatures... And something is wrong with your adopted sister: "Brother, you can only be mine!"