Attack on Titan: Capture the Founding Titan at the Beginning!

[No heroine, earth roars to destroy the world, time travel, cruelty, not brainless, not the Holy Mother] In a world surrounded by high walls, there is no difference between humans and domestic animals. As long as you live and don't get eaten by giants, that's fine. As long as you are alive and can be a happy family, it is good. But even such a small hope will be taken away. ... The time traveler - Lu Xiu, came from the earth. He knew the plot of Giant and he knew what was going to happen next. He is unwilling to give up, and he will stop all this alone. "Although I am not from this world, I grew up in this world." "World, you expect the destruction of Parady Island." "Such expectations... I will never allow it!!" "Since the world expects Parady Island to be destroyed, then I will destroy the world!!" ... Arrive at the place where the power of the giants of the Reis family is inherited. Lu Xiu captured the ancestor giant. From then on, step by step. Lu Xiu began to destroy the world. ... "To all Ymirites, I am Lucius Yeka." "I am talking to you through the power of the ancestors." "All hardened walls on Parade Island have been lifted." "All the giants that slumber within will spring into action." "My purpose is to protect Parade Island, where I grew up." "Protect my friends, protect my compatriots." "However, this world wants to destroy Parady Island." "They expect all Eldians to be wiped out." "I refuse!!" "I can't accept that world." "The giants in the wall will trample all the land outside this island." "Until all life is expelled"