She is a member of Shachihoko Group and she is the only female member in the group. She is usually with Sha and Hoko, in which Sha is the strongest amongst them. All three of them are from a local Karate club. They like to collect cards by defeating any duelist they find passing by. They all use similar decks and strategy to defeat their opponents.
One day they found Benchan and stopped him and asked to duel them. Benchan told them that he does not duel but she had a hunch that what he was carrying was a collectable cards folder in his folder carrying bag and told him to show that folder and give them all the cards to them. Then Katta showed up who was looking for Benchan and saw whim in a situation where he was outnumbered and he tried to protect him by pretended to be Benchan "the guy with glasses". Katta challenged them to a duel and Chi went in first to duel Katta. She defeated him because the deck Katta was using was having too strong cards which required a lot of mana to play them and she knew that he just an amateur and defeated him.