The entire countryside comes to a halt midday to witness a rare solar eclipse that is rumored to allow the average person to see Mushi. Unable to avert their gaze, the air is full of awe and wonder—but those who know the Mushi are preparing for the eclipse's aftermath. Based on a prediction from Tanyuu Karibusa, the cursed recorder, Mushishi Ginko finds himself in a very unlucky farming village. Immediately following the solar eclipse, a strange black cloud begins to gather in the sky and blocks the sun once more. Suspecting it to be the work of a Mushi known as Hihami, Ginko seeks to liberate the village from perpetual darkness. However, it seems that not all of the villagers are eager to return to the light.

OVAs of History's Strongest Disciple Kenichi bundled with volumes 46, 47, 49, 53, 54, 55, & 56 of the manga.

The half-divine King of Uruk, Gilgamesh, was considered but a paltry legend... until his majestic tomb was discovered in the Middle East. This imperial crypt drew scientists from across the globe to the land, and with that came recognition of their fame. In a joint effort, they built Heaven's Gate in pursuit of advancing human knowledge. One day, a group of terrorists driven by greed attack Heaven's Gate, causing an explosion within the facility for archaeological excavation. The resulting phenomenon had much more impact than anyone could have imagined. More specifically, it triggered the birth of supernatural beings. In the midst of this mess, two siblings by the names of Kiyoko and Tatsuya encounter mysterious men with supernatural powers who, despite the scientific crisis around them, claim the ability to restore good to the world. Nevertheless, these seemingly heroic and all-powerful creatures act under the rule of factions. Are they here to save the world, or destroy it?

A short prequel to One Piece Film: Gold featuring the nine Straw hat crew members on the ship, planning what to do when they arrive the Casino.