The Diary of Ma-chan is the official debut work of Osamu Tezuka, who serialized it in 1946.

It follows the life of a little preschooler named Ma-chan, and all of the shenanigans he gets wrapped up in.

Also includes:

• Chinnen and Kyo-chan: The daily life in Kyoto of Chinnen, a monk in training.
• A-chan B-ko-chan Expedition Log: A long form gag-adventure story. A pair of siblings explore several areas and even worlds as they help find things and deal with issues for others.
• The Antenna Family: A family comedy with themes of television.
• Gucchan: The everyday life of the rambunctious little boy Gucchan, his family, and his group of friends.
• Lively Sei-chan: A glimpse in the life of the spirited young Sei-chan, his family, and their daily troubles and fun.
• Chief Detective Kenichi (Newspaper Chapters): An alternate serialization of Chief Detective Kenichi. An episodic series of two-page cases of differing natures involving the titular chief detective.
• Mrs. Denko: A short series involving the chaotic daily life of a family while also showcasing electronics.
• Good Morning! Cusco: Cusco is a widow from Peru who has just moved in with her brother's family. With her curious inventions, Cusco brings lots of chaos to those around her.

Volume 129 of the Osamu Tezuka Complete Works