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Some of the characters get together and talk about "regrets" they have after 4 years of anime Gintama. Soon they fight over who gets more screen time. Special animation shown at the Gintama Haru Matsuri 2010 live event.

In the winter of 1995, Mikiya Kokutou passes a young woman during a late night stroll in the snow. Clad in a striking white kimono and bearing an enigmatic gaze, Shiki Ryougi smiles at Mikiya who stares back with curiosity. Later that spring, Mikiya notices Shiki at his high school entrance ceremony, and they become acquaintances through lunchtime conversations. As Shiki begins opening up to him, Mikiya learns about her unique upbringing.



Meanwhile, a series of unprecedented murders takes place across Mifune City. Seemingly related, these murders are particularly brutal and warrant a large scale police investigation. Because of his cousin's work as a police investigator, Mikiya is given insight into the investigation. Concerned for Shiki's safety, Mikiya decides to monitor her actions, but in doing so, he stumbles upon a truly frightening discovery that changes his life forever.



[Written by MAL Rewrite]

As the fall season nears its end, Chidori Yoshino, a member of Strega, abducts Junpei Iori. Meanwhile, Makoto Yuuki and the Specialized Extracurricular Execution Squad (SEES) annihilate the Arcana Hanged Man. Soon after, a mysterious playboy named Ryouji Mochizuki transfers into Gekkoukan High School's Class 2-F. Supposedly having achieved their goal, the members of SEES believe they are free from the battle that has ruthlessly stolen away the lives of their loved ones. And yet, Tartarus and the Dark Hour continue to exist, undeterred by the extermination of the twelfth Shadow. Distraught by their apparent failure, SEES must cope with their personal struggles and discover whose sake they fight for. As Makoto and Junpei's journeys of self-discovery progress, Ryouji's identity and the reason behind Aegis's hate for him become clear. [Written by MAL Rewrite]

OVAs bundled with the 17th, 19th, and 23rd tankoubon volumes of the Golden Kamuy manga.