Wikipedia
Microsuperman
is a manga series written and illustrated by Osamu Tezuka, published in Akita Shoten's Weekly Shōnen Champion from March 1973 to September 1973. It was later adapted into an anime series by Toei.
The anime adaption of the Tezuka's manga Microid Z, changed the letter "Z" with an "S" as to match the initial letter of the show’s sponsor, Seiko. It consisted of 26 episodes and was originally broadcast on TV Asahi.