The Osamu Tezuka Story is a biographical manga written and illustrated by Toshio Ban, one of Tezuka’s assistants. Not only is this a massive manga about Osamu Tezuka, it’s a highly researched and well-written one. The reason it’s included on the site is because it shares the story of Tezuka visiting Sanrio and created Unico.

Title: 手塚治虫物語 1928-1959
Translation: The Osamu Tezuka Story 1928-1959
Publisher: Asahi Shimbun Company / 朝日新聞出版
Author: Toshio Ban and Tezuka Productions
Pages: 494
Published: July 1, 1992
ISBN: 9784022564573
Original Price: 2000 Yen

Title: 手塚治虫物語 1960-1989
Translation: The Osamu Tezuka Story 1960-1989
Publisher: Asahi Shimbun Company / 朝日新聞出版
Author: Toshio Ban and Tezuka Productions
Pages: 396
Published: September 1, 1992
ISBN: 9784022564962
Original Price: 1900 Yen
This volume includes Osamu Tezuka’s visit to Los Angeles, Sanrio, and the creation of Unico.

Title: The Osamu Tezuka Story: A Life in Manga and Anime
Publisher: Stone Bridge Press
Author: Toshio Ban and Tezuka Productions
Translator: Frederik L. Schodt
Pages: 928
Published: July 12, 2016
ISBN: 9781611720259
Original Price: $29.99/$36.95
They published the entire manga in one volume in English on July 12, 2016. You’ll find Tezuka’s life story and also the story of Unico’s creation.