Excited children gather around the enigmatic masked Storyteller once more. His unique kamishibai storytelling draws them into tales of fear and dread. These are dark and foreboding stories, which could happen to anyone... This season has tales of a salaryman who buries a dead cat, only to be haunted soon after; a college student and her cheap new apartment that hides a ghastly secret; boys exploring an abandoned haunted house before coming across a strange fish tank; a man who finds himself on the wrong bus, and in more danger than he thought possible; and a young couple's visit to an amusement park, which suddenly takes a dark turn. All these stories and more await in Yami Shibai 4. [Written by MAL Rewrite]

Anime adaptation of the spin-off manga that focuses on the life of the triple agent as he attempts to keep all his different roles in check.

Unaired episode 13 of Aoharu x Kikanjuu bundled with BD/DVD volume 6.

After conquering the galaxy, mankind has reached its apex and is now on a steady decline. The resources of the universe are diminishing, and around 500 billion humans begin to return home to Earth. Thus begins a war between the various factions of humans for control of the planet. Eventually, an authoritarian government known as the Gaia Sanction prevents the re-population of Earth. Captain Herlock was one of the Elite Wing who was tasked by the Gaia Sanction to defend the Earth. His fleet of ships was unstoppable under his command. However, the Gaia Sanction allows a diplomatic elite to immigrate to Earth, which angers Herlock. He goes rogue and fires upon the diplomats and the rest of his fleet. He decides to unleash dark matter on the planet to make it uninhabitable, but also becomes engulfed in it which immortalizes him. One hundred years have passed, and the legendary Captain Herlock is still at large, with only the Arcadia under his control. The Gaia Sanction continues with their plans for control over the Earth, while hiding its true state. But Captain Herlock is preparing for one final showdown with them, which will determine the fate of the world!