Reddit reviews Ayako

Osamu Tezuka's Black Jack has been completely published in English in 17 volumes. So no, you do not have the complete series. It has also been published in English by different companies at different times in different formats, so you might have more than one printing of Black Jack represented in the 7 you found.

I'm not sure how many chapters Buddha is, but it was published in English in 8 volumes. Are these 54 chapters very long chapters? If so, you probably have it all.

Osamu Tezuka has written a looooot of stuff and all kinds of stuff too. If you want to get some shorter stuff by him, Ayako is a trilogy that was published in one fat volume. Other shorter series: Apollo's Song and Ode to Kirihito are both published in English. Phoenix can be considered his greatest work, but good luck trying to find all of it.

Most of Tezuka's work looks kind of cartoonish, but that's just his style. The cartoonish look should not equated with a childish storyline--though some of his work is definitely more childish than others.

Hope that helps some.

Ayako by Osamu Tezuka