Gintama / Justaway
Justaway is an object that was first introduced at the Viper Factory as an explosive. Since then, it has appeared many times in the anime like an Easter egg. Think of it as the Pandaman (from One Piece) of Gintama on a somewhat smaller scale!
Its name has been romanized in various ways such as Justaway, Jastaway, and Jasterway. "Justaway" is the most common and accepted spelling of this item, but it is in no way a confirmed official spelling.
Justaway, though lifeless, was able to rank #21 in the second character popularity poll.
Due to the volume of anime appearances the Justaway has made in comparison to the manga, the sightings are focused on the anime with the exception to the following: