Happy of Fairy Tail was summoned to another world and became a hero! And its inhabitants aren’t human… They’re animals, with ears and tails to match! Guided by a mysterious talking heart, Happy soars through the skies of this new world, helping the friends he’s making along the way, like a cute bunny, an alluring fox, and even a dog that scares him! What is this place? And will Happy ever make it back home to Natsu and the rest of Fairy Tail?! A new adventure begins through uncharted territory, with Happy as the star and artwork by Kenshiro Sakamoto, creator of Pitch-Black Ten!
Marice and the MF (Marice Friends) she created with her magic were used as an energy source in the past by General Star. In her sorrow, she lost control of her magic, so they had to seal her away for a thousand years. After her revival, she was able to enjoy the peaceful paradise she always dreamed of with Happy and the MF. But then General Star traveled through space-time to capture her! Will Happy be able to save Marice and the MF?! Will he ever be able to go back home to Natsu?! Happy's Heroic Adventure in another world is finally reaching its conclusion!