
Isha Green is a teenage ESPer that joins Mars Haven's group at the beginning of the story. Unlike Jean, Sion, and Mars, he follows the rules set by the administrators of the ESPer project in order to become a "freeman" and fulfill his dream to become a singer. At first he doesn't get along with the trio as he sees them as roadblocks on his path to freedom, but he eventually softens and begins to think of them as his friends. He is also the man that Mars Haven has seen repeatedly in her dreams since birth.