ココロのココロン (Cocoro no Cocoron) is a role-playing game developed by NanaOn-Sha and published by Namco Bandai Games for the Nintendo DS in Japan. The game follows the adventures of three friends, Cocoron, Raffy, and Pochi, who must save the world of dreams from a mysterious force. Players take control of Cocoron and explore a world composed of dreams. As they progress, they gain new abilities and items to help them in their quest. The game features colorful, hand-drawn visuals and a unique art style. The game also features a variety of mini-games and puzzles to complete. Cocoro no Cocoron is a charming and creative RPG that is sure to delight fans of the genre.