Pokémon Mystery Dungeon: Ginji's Rescue Team(2006)

Pocket Monsters Fushigi no Dungeon: Ginji no Kyuujotai

The comic tells the adventures of a young, impatient, human boy named Ginji, who transforms into a Torchic, finds himself in a new world, and meets a timid Mudkip who wants to be part of a rescue team. Throughout the comics, Ginji shows a huge desire to become human again.