The February issue of Mag Garden's Comic Garden magazine published the final chapter of the Shūten Unknown (Last Stop Unknown) manga series by creator Shiho Sugiura (Koori no Mamono no Monogatari, Silver Diamond) on Tuesday. The magazine also notes that Mag Garden will publish the manga's fifth compiled book volume in April.

The fantasy manga revolves around two men searching for a certain treasure. They travel to a mountain where it is said to reside, but they get themselves caught up in an unforeseen incident.

Sugiura launched the manga in Mag Garden's Monthly Comic Avarus magazine in April 2013, and Mag Garden serialized the story concurrently in Comic Garden. Mag Garden published the manga's fourth compiled book volume on May 15.

Sugiura ended her Silver Diamond manga in 2012. Tokyopop published the beginning of Silver Diamond before closing North American publishing operations in 2011.