Kochira Katsushikaku Kameari Kouenmae Hashutsujo: Washi to Ore!? - Bokura wa Asakusa Shounen Tanteidan!

A new time-machine invention gives Kankichi Ryoutsu an irresistible opportunity: return to the Asakusa of his childhood. Instead of a quiet trip down memory lane, he finds himself face to face with the younger people and neighborhood adventures that helped shape the man he would become.

Back among familiar streets in a very different era, Ryoutsu is drawn into the antics of a youthful detective group. The journey turns his own past into a lively mystery, where nostalgia and mischief collide and the adult Ryoutsu must deal with a version of his world that remembers him very differently.