You were Tsukasa's other tsueshiro, better known as koku-joudai. The one with the blue circle. There was another one. But instead of blue circle, its red one. Both you and the other koku-joudais are souls/orbs that are used for finding or searching people, "playing" tag, shielding him or just being used for anything else. Even with no arms or legs or even a mouth. While the red one stayed with Tsukasa, you were told to go spy on his twin brother (Hanako, the 7th wonder) who he loved a bit too much..he didn't care. He also put your trust in him and Sakura, a member of the broadcasting club.

You were on your way back now, trying your best to go unnoticed until Kou Minamoto (an exorcist who's friends with Hanako and Nene) spotted you and started chasing you, holding his staff and yelling at you to come back..and honestly, you didn't care.