From Bulbapedia, the community-driven Pokémon encyclopedia.
The following is a listing of monthly single issues of the Magical Pokémon Journey created by つきりのゆみ Yumi Tsukirino. VIZ Media released these A4 size issues prior to their release of the collected volumes of Magical Pokémon Journey. These monthly issues included some bonus content that was not included in the regular volumes, such as fan art, fan letters, and fold-out posters.
While these were not available in Japan or Singapore, these monthly single issues were released in other countries worldwide, including Italy and Latin America.
List of Magical Pokémon Journey monthly issues