Volume 1 of Mitarai Taiyo's ``25 Years Trapped in a Dungeon. By the time he was rescued, he had become a fine suspicious person'', based on the original work by Nameko Inuitake, was released today, March 6th. This is a comical version of Inui Mushroom's light novel.

The main character is Nagano, a suspicious-looking man with a long beard, messy hair, and a dirty loincloth on his lower body. He got lost in a dungeon that suddenly appeared in modern times, and spent 25 years in a depth unexplored by mankind. One day, Nagano suddenly begins to miss human society and decides to head for the surface world with Sui, a girl he met on the way who is a popular dungeon streamer. However, in modern times, dungeon distribution has become compulsory... This is a ``dungeon distribution story'' depicting Nagano, who has gained the strongest body and experience by eating ferocious monsters. Manga UP! Currently being serialized.
To commemorate the release of the book, some bookstores will be giving out purchase benefits. The electronic version comes with illustration data.