Honshu

S1 E1: The central island of Honshu is home to over 100 million people and its biggest city, Tokyo, is one of the largest urban metropolises on earth. But it has a wild heart with most of Honshu mountainous. As this natural history documentary reveals, this wilderness is home to an astonishing range of wildlife including black bears, monkeys, exquisite fireflies and even cow demons.