An adaptation of the manga "UROTAN" called "Hentai" was released as a bonus to the limited edition of the second volume. The story is about Kam, a cosplayer with a slightly absent-minded personality who got lost among a huge number of anime fans.

In 2049, Tokyo experienced two devastating earthquakes that reduced the city to rubble. A new capital was built on the site of the former metropolis, which became a haven for refugees, armed mafiosi and terrorists.