The story takes place in another world where there are gods. This world lays above the sky and below the ocean. Four evil gods used to support this world by acting as pillars, but they ran away including all the other minor gods that lived in this world. Thus, people called Kashikan's appeared. Their job is to capture the gods that fled and return stability to the country. The main character Ichiyou is a Kashikan who unwillingly took up the job to regain his foster father's freedom. His foster father, a tiger, was captured to act as a replacement of the four gods who ran away. Ichiyou's main objective is to recapture the evil gods and take back the peaceful life that he used to live. (Source: zcigaara)

With the seniors having graduated from high school, the determined swimmers eagerly take on their futures with a dream to fulfill. Now attending Hidaka University in Tokyo, Haruka Nanase unexpectedly runs into Shiina Asahi, an old teammate and friend from his middle school days. Consequently, the troubling memories regarding his middle school swim team resurface, as it was a time when Haruka's views on swimming became negative and led him to quit the team. Haruka later reconnects with his other middle school classmates; all except for Ikuya Kirishima, who still resents Haruka for quitting the team, resulting in its disbandment. Aware of the issues between them, Haruka resolves to improve his friendship with Ikuya. However, he quickly realizes that making amends with an old friend isn't his only obstacle. Facing the reality and challenges of encountering higher calibre swimmers, Haruka must work hard to establish himself if he dreams of competing on an international level. [Written by MAL Rewrite]

Unaired episodes included with the Blu-ray releases of Arifureta Shokugyou de Sekai Saikyou.

Asahi's life in reality ended simultaneously when she died playing Union, a world-renowned online RPG. The members of Subaru went separate ways when Union shut down due to Asahi's death. Six years later, Haruto logs onto a renewed version of Re'Union and reunites with Asahi who had died. Is it really her or just an electronic ghost? The former team members reunite and enter the mysterious and deadly online game to find out. (Source: TBS Global Business)