is a manga by Osamu Tezuka that began serialization in 1946.
Diary of MÃÂ-chan is a collection of 4-panel comic strips (yonkoma) about the everyday adventures of a small pre-school boy named MÃÂ-chan. The manga consists of 73 strips.
Diary of MÃÂ-chan was Tezuka's first professional work to be published. When Tezuka drew it in 1945, he was only 17 years old. While the drawings were crude compared to his later art work, many elements of his art style first became visible in this comic strip. Diary of MÃÂ-chan was so popular that MÃÂ-chan dolls were produced, the first of many Tezuka merchandise products.