Countries all over the world formed an alliance to counter the emerging enemy of mankind Neuroi, whom only girls with special powers could counter. However, the Neuroi never appeared. Instead of fighting, the witches spend their days idly. This time following not only unit 501, but also unit 502 known as Brave Witches! The 2nd volume of the comical daily drama of the witches who do not fight Neuroi begins! (Source: MAL News)

When a gate to another world suddenly opens on Earth, Mikado City is invaded by strange creatures known as Neighbors, malicious beings impervious to traditional weaponry. In response to their arrival, an organization called the Border Defense Agency has been established to combat the Neighbor menace through special weapons called Triggers. Even though several years have passed after the gate first opened, Neighbors are still a threat and members of Border remain on guard to ensure the safety of the planet. Despite this delicate situation, members-in-training, such as Osamu Mikumo, are not permitted to use their Triggers outside of headquarters. But when the mysterious new student in his class is dragged into a forbidden area by bullies, they are attacked by Neighbors, and Osamu has no choice but to do what he believes is right. Much to his surprise, however, the transfer student Yuuma Kuga makes short work of the aliens, revealing that he is a humanoid Neighbor in disguise.

At the end of the Shang dynasty of ancient China, Emperor Shou defied the will of the Gods. He openly declared to lead the people and to resist against the gods. Zi Shou bravely fought against Tian Kui, but only received laughter from the gods watching from above. He was then killed by Tian (another greater god) and broke the Immortal Phoenix armor. Wu Geng then woke up in the body of Ah Gou and realized he has now a wife named Bai Cai...

Fourth season of Wu Geng Ji.