Far away in the Andromeda Galaxy lies Planet Barbu, home to an advanced civilization. Technology had reached incredible heights, and society was built around efficiency and logic.

Deep inside the planet rests the , a miraculous crystal that shines by feeding on many different emotions. It is the source of all energy on Planet Berb.

But over time, the people of Barbu began to push away emotional ups and downs, seeing them as unnecessary and inefficient. As they slowly let go of their feelings, the Saba Gem lost its glow.

Planet Barbu fell into a serious energy crisis. Even now, the planet is fighting for survival.

Even in a society that had turned away from emotions, some researchers kept believing: “Emotions are the foundation of civilization.”

They are the Cocoro Experts.

Many of them had watched someone close to them slowly lose their emotions. As society became more efficient, loneliness grew deeper, and people’s hearts quietly began to break.

Those experiences led them to dedicate their lives to research.

When the crisis on Planet Barbu reached a breaking point, their work was finally seen as the planet’s last hope. And so, Project Ranger was born.

Project Ranger has one mission: Collect a wide range of emotions and make the Saba Gem shine again.

But on Planet Barb, where emotions had almost disappeared, collecting emotional energy was no longer easy. So the researchers turned their eyes beyond their home planet.

The planet they chose was Earth: a blue planet where humans still shine with countless emotions.

The Cocoro Experts boarded the spaceship Sabab-Ranger and set off for Earth.

To study emotions on Earth, the Cocoro Experts created tiny life-forms called Sabab.

Each Sabab is born from emotional energy stored in an Emo Tank and sent to Earth.

Through the app, Sabab learn how to communicate with people. As you talk with them, they collect emotional energy and send it back to the Sabab-Ranger.

The Cocoro Experts analyze this energy and search for a way to save Planet Barbu.

Sometimes, a Cocoro Expert will speak with you directly and listen to whatever is on your mind. It is part of their research, but it is also a moment to share what is in your heart.

Every moment you spend with your Sabab, and every conversation you have with an Expert, becomes part of the research that may save a distant planet.