Season 0 of Hitori no Shita: The Outcast premiered on September 30, 2018.

Season 1 of Hitori no Shita: The Outcast premiered on July 9, 2016.

One day, on his way to visit his grandfather's grave, Zhang Chulan is attacked by zombies in a graveyard. In the midst of that situation, he is saved by a mysterious girl, who wields kitchen knives in order to kill the enemies. The girl tells Chulan, who is relieved, to face his hardships head on and leaves. However, Chulan later sees that girl again at his university. From that moment, Zhang Chulan's destiny begins to move. There will be strangers with special powers appearing one by one, with battles involving those abilities. Each episode will bring a new mystery to light.

Season 2 of Hitori no Shita: The Outcast premiered on January 16, 2018.

In the first season, the protagonist, Chou Soran, hiding that he is an “outsider” (someone able to use special abilities) encounters a mysterious girl named Fuu Houhou who hold the secret of eternal life.

Together, they will join the Raten Tournament where they will try to solve the mysteries related to themselves.

In this 2nd season that marks the beginning of this fighting tournament between Outsiders, mysteries will gradually be unveiled and new characters will appear.

Season 3 of Hitori no Shita: The Outcast premiered on April 24, 2020.

After Raten Taishou, Wang Ye had no choice but went home. Because of Wang's "Fuukou Qimen", peace never comes to him. Wang has to ask 'Na Dou Tong' for help due to Zhuge Qin's suggestion. Feng Lan and Feng Baobao are coming to help him. How does Zhang Chulan find out the biggest boss? What would happen to Zhuge Qin and Wang Ye then? Who is the person wants Wang's "FuuKou Qimen"?

Season 4 of Hitori no Shita: The Outcast premiered on September 24, 2021.

Season 5 of Hitori no Shita: The Outcast premiered on December 9, 2022.

Zhang Chulan, Feng Baobao and others chase Chen Duo to Biyao Village. While finding out the truth about Chen Duo's murder of Liao Zhong. The disposal of Ma Xianhong and the Cultivation Furnace has also been prepared. The night is dark and windy and it' s time to set fire to the village. The Battle of Biyou Village is coming!