头上贴着胶布、无论从外形还是性格来看都像小孩子的写乐保介却天资聪颖，以第一名的成绩跳级进入高中。写乐平时天真开朗，然胶布下却掩藏着第三只眼的秘密。原来他是古老的三眼族的遗孤，十几年前三眼族神秘灭亡，写乐被族人托付给养父犬特医生。童年时的写乐脾气暴虐，令人困扰。犬特发现，只有用胶布将第三只眼封上才可使写乐安静下来。而一旦胶布被撕开，古老文明的灵魂将再次回归。如同被命运引领一般，写乐和朋友们经历了一次次神秘而刺激的大冒险。

寫樂保介是一名平凡的國中生，也是建立古代文明的三眼族唯一的後代。他額頭上貼著膠布，底下隱藏著第三隻眼，一旦撕下膠布他便會性格大變，成為擁有強大超能力與天才智慧的狂傲少年。就這樣他與青梅竹馬和登千代子，展開精彩刺激的考古冒險之旅！

The Three-Eyed One is a romance SF manga by Osamu Tezuka. It was originally serialized in Weekly Shōnen Magazine from 7 July 1974 through 19 March 1978 and was later published into thirteen tankōbon by Kodansha. This story is about Hosuke Sharaku, the heir to the long lost super civilization of the "Three Eyed Ones", and his best friend, Chiyoko Wato, with whom he solves various problems, often of his own doing.

In 1977, The Three-Eyed One tied with another Tezuka manga, Black Jack, for the Kodansha Manga Award. The manga has since spawned a TV special by Shueisha and later an anime whose 48 episodes ran from 18 October 1990 through 26 September 1991. The main character appears in three video games: Mittsume ga Tooru by Natsume on the MSX in 1989, Mittsume ga Tooru/The Three-Eyed One by Tomy on the NES in 1992, Astro Boy: Omega Factor by Sega on the Game Boy Advance and Astro Boy by Sega on the PlayStation 2.