"Bōken Korobokkuru" is a 1973 anime series based on the manga by Osamu Tezuka. The story revolves around a group of tiny, mythical creatures called the Korobokkuru, who live hidden from humans in the forests of Hokkaido, Japan. These beings, resembling small, humanoid figures, possess advanced technology and a deep connection to nature. The narrative centers on their interactions with humans, particularly a young boy named Pīta, who becomes a bridge between the two worlds.

The Korobokkuru face constant threats from humans who encroach on their territory, driven by greed and a lack of understanding. Their peaceful existence is disrupted when a logging company begins destroying their forest home. The series explores themes of environmentalism, coexistence, and the consequences of human actions on nature. The Korobokkuru, led by their wise elder, Chikap, must navigate these challenges while trying to protect their way of life.

Pīta, the human protagonist, befriends the Korobokkuru after discovering their existence. His curiosity and empathy lead him to advocate for their cause, often putting him at odds with other humans, including his own family. The series highlights the tension between progress and preservation, as Pīta and the Korobokkuru work together to find a balance that allows both worlds to thrive.

The plot is episodic, with each episode presenting a new challenge or conflict arising from human interference. The Korobokkuru use their ingenuity and technology to outwit their adversaries, often employing clever strategies to avoid direct confrontation. Despite their small size, they demonstrate resilience and resourcefulness, embodying the spirit of survival and adaptation.

The series also delves into the cultural and spiritual aspects of the Korobokkuru, portraying them as guardians of the natural world. Their reverence for the environment contrasts sharply with the exploitative mindset of many human characters, creating a poignant commentary on the relationship between humanity and nature. Through its engaging narrative and well-developed characters, "Bōken Korobokkuru" offers a thought-provoking exploration of ecological themes and the importance of mutual respect between different species.