Test of Integrity, I Guarded the Backbone of Kyushu

July 2308. The era of invasion by all races. Kyushu's second line of defense collapsed, and large numbers of soldiers and civilians gradually retreated into the third line of defense. Liu Feng returns from a ruined future. In this era when countless people shed tears on their clothes, blood spilled on the ground, and the land of Kyushu was filled with smoke. The integrity test space is opened. The people from the country with the strongest backbone will be awarded the title of Strongest Backbone and become the strongest backbone of mankind, titled: The Backbone of the Human Race! Liu Crazy has one sword per man. Anyone who attacks our Nine Provinces will be killed no matter how strong he is! The backbone of the most powerful nation has been awarded the title: The Great Emperor of the Human Race! This is the last hope. The backbone of Kyushu is endless, Liu Feng has only... Kill kill kill kill kill! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.