Gigantor

A mysterious robot suddenly appeared in the city of Tokyo. Shotaro Kaneda, a boy detective, approaches the mystery of the robot weapon "Tetsujin 28-go" developed by the Japanese Army during the war. What exactly is Tetsujin's true nature?

16 chapters

Chapter 16 — The Secret Society (Part 2)
Chapter 15 — The Secret Society (Part 1)
Chapter 14 — A Monster Breaches the Waves
Chapter 13 — Professor Shikishima Lives
Chapter 12 — The Crumbling Dam
Chapter 11 — The PX Syndicate
Chapter 10 — Tetsujin 28
Chapter 9 — The Secret Facility
Chapter 8 — Thunder Cloud
Chapter 7 — The Appearance of Tetsujin
Chapter 6 — Shotaro's Victory
Chapter 5 — The 11th Cell
Chapter 4 — A Fearsome Power
Chapter 3 — One Thing After the Other
Chapter 2 — A Chance Encounter
Chapter 1 — The Closing Days of WW2

Gigantor

Gigantor is a completed manga by Yokoyama Mitsuteru, first published in 1956. It blends thriller, sci-fi, action and psychological. You can read all 16 available chapters of Gigantor online for free on MangaPulse; the newest is Chapter 16, added 2026-10-05. The series is finished, so you can read it from start to end in one go.

Yokoyama Mitsuteru · 1956 · Completed

Thriller · Sci-Fi · Action · Psychological · Mecha · Crime