Fantasy World Jun

A experimental manga series about a boy named Jun and his surreal voyages. The character is an alter-ego of Ishinomori himself.

(from ebookjapan):

Jun is an aspiring mangaka. His dream is not understood by his father, and the manga name(manuscript) he drew is torn up. Guided by a girl he met in his disappointment, he grows up in a fantasy world with various experiences...

This shocking work was published in "COM," the magazine launched by Osamu Tezuka in its first issue and was the recipient of the 13th Shogakukan Manga Award in 1967.