Bai Qiuran is one of Qingming's disciples, and has a lot of potential to be his successor. Even though he's still a Qi cultivator, he believes he will finally make his breakthrough this time. As such, Bai Qiuran decides to go down the mountain where exciting experiences await him.

Taking place between the events of Free!: Eternal Summer and Free!: Dive to the Future, Free!: Take Your Marks plays out the graduated seniors' last summer through four different stories before they set sail for the future. Unmei no Choice! (Destined Choice!) follows Haruka Nanase and Makoto Tachibana searching for a new apartment for Haruka as he settles into Tokyo. Hitou no Cooling Down! (Cooling Down at the Secret Hot Spring!) sees Aiichiro Nitori choose a graduation gift for Rin Matsuoka and Sousuke Yamazaki, while Momotaro Mikoshiba wins tickets to the Anago Hot Springs. Hoping for a trip together, Aiichiro and Momotaro invite Rin and Sousuke. Kessoku no Batafurai! (United Butterfly!) shows Rei Ryugazaki, Nagisa Hazuki, and Gou Matsuoka creating a recruitment video to attract new club members for the next school year. Tabidachi no Etanaru Buru! (Departing Eternal Blue!) looks into the Iwatobi and Samezuka swim teams' plans for Rin's surprise going-away party, as he will be departing for Australia soon. [Written by MAL Rewrite]

Long ago, there was a monk named Myoue who could bring anything he drew to life. He quietly lived with his wife Koto—a black rabbit in human form—and their three children: Yakushimaru, Kurama, and Yase. One day, the high priest of the land concluded that Myoue's drawings caused too many problems for the locals and ordered him to find a solution. In response, the family secretly fled to an alternate world of Myoue's own creation—the Looking Glass City. Everything was peaceful until Myoue and Koto suddenly vanished. Their three children are left to take care of the city, and Yakushimaru inherits Myoue's name and duties. Stranded in this alternate world, their problems only get worse when a young girl—also named Koto—crashes down from the sky and declares that she is also looking for the older Myoue and Koto. Armed with a giant hammer and two rowdy familiars, Koto just might be the key to releasing everyone from the eternal paper city. [Written by MAL Rewrite]

Gene Starwind has always dreamed of piloting his own ship out into the vast sea of stars. Unfortunately, not all dreams come true, as he spends his days working odd jobs alongside his partner, James Hawking, on the small planet Sentinel III instead. However, this all takes a turn when the duo takes on a job from Rachel Sweet who, unbeknownst to them, is actually a treasure-hunting outlaw. Tasked with protecting a mysterious girl known as Melfina, the meeting irrevocably changes the pair's lives as they are sent out into the great unknown aboard the highly advanced ship, Outlaw Star. Seihou Bukyou Outlaw Star follows Gene and his ragtag crew as they brave the final frontier, navigating the stars in search of answers to the mysteries surrounding Melfina. Encountering dangerous bounty hunters, space pirates, Taoist mages, and even catgirls, there is sure to be an exhilarating adventure around every corner. [Written by MAL Rewrite]