Story following Kuromi as she travels around the world in search of her missing sister, Romina, who makes her first appearance in this anime. In addition to Romina, a number of new characters will appear, including the friends who travel with Kuromi and a member of an evil organization that stands in the way of their journey.

• Junko Takeuchi
• Noboru Maeda
• Maika Yamamoto
• Kotomi Aihara
• Ikue Otani
• Misaki Watada
• Takamasa Mogi