For My Sister, I Became a God

[No system + younger sister + doting brother + high martial arts + decisive killing] Both parents are dead, and my sister has a house. As an ordinary time-traveler, Liu Chengfeng has a younger sister that is standard for time-travelers and an off-plan house that does not require the 997 blessings and is so tiring that he vomits blood! All this is actually perfect for Liu Chengfeng, but it is a pity that he is traveling through a world of high martial arts. There are martial arts masters who suppress the world, burning mountains and boiling seas, smashing mountains and rivers with their fists, just like a myth coming to the world. There are monsters running rampant outside, swallowing thousands of miles of mountains and rivers with blood! The whole world seems to be divided between humans and demons, but in fact there are undercurrents. The place for human existence is being continuously compressed, and the entire human society is in danger. This forced Liu Chengfeng, who was a social beast in his previous life and an ordinary high school student in this life, to let his sister live a stable life, and had to take advantage of the situation. A few years later, in front of the broken demonic abyss, stood a man wearing a bloody robe, with scarlet eyes and an extremely terrifying aura. He looked at Mo Yuan who had been directly dismembered by him with a ferocious smile, and kept muttering to the big demon whose body was shattered and whose eyes were filled with fear: "My sister likes the blooming red roses the most~ If I could refine the bright red devil's abyss in front of my eyes into a rose..." (Brain storage)