UTOPIA: The Last World War/Tama-chan the Angel

Utopia: The Last World War was originally published in 1962 as a standalone science fiction volume, credited to the collective pseudonym Fujiko Fujio before the authors, Hiroshi Fujimoto and Motoo Abuyama, began writing under their distinct professional names. The narrative centers on a group of children who encounter an inhabitant from a utopian world, blending the post-war Japanese fascination with space travel and alien contact with the creators' signature style of blending domestic comedy with speculative fiction.

The work is significant as a formative piece in the evolution of Fujiko F. Fujio's storytelling, which would later culminate in the globally recognized Doraemon series. The character Tama-chan the Angel serves as a thematic bridge, reflecting the era's cautious optimism regarding technology and the persistent mid-century hope for a peaceful, extraterrestrial-guided future, a tone that defined much of the duo's early juvenile manga output.