Fushigi no Chocobo

Mysterious Chocobo is a kid's manga based on the Square video game Chocobo's Mysterious Dungeon. It's about a Chocobo and Mog (simply called Chocobo and Mog, respectively) who search various dungeons full of dangers and hidden traps for treasure. Chocobos and Mogs are mascot-like creatures featured in several of the Final Fantasy games.

Note: There are conflicting sources on whether this continued on or remained as a oneshot.