Ryuhei Ozaki is a 5th grader who discovers a journal written by his father Shohei when he was himself a kid: “Tokyo Exploring Records,�. Ryuhei informs his online friends and create his own exploration team. During the summer vacation, the three boys decide to go down a manhole into the sewers in quest of a hidden treasure indicated on the journal. Little did they kno…Read all

Starring:

Akiko Yajima, Issei Futamata, Bin Shimada

Genre:

Animation