Riko Suzugamori - She was a twin sister of Kanako and a sister of Ren Suzugamori. She had leave her sister and her older brother to find her own strength. She was upset of Ren's behavior who not same person like she know before. She was not strong player as her sister and her brother. She also feel hurt to see her brother get a power called Psyqualia. She decided that she will be strong by her own strength and will catch up with her brother and her sister. Toshiki Kai - He was a strongest player since he defeated a few player. He had never lose any fight until he meet Aichi. He was considered himself as a lone wolf since he always be alone by himself even Miwa stay by his side. He have a bad past with his friend, Ren. He had know Ren have a power which he leave him. He was not himself until Aichi and Riko come in his life. He still get close to Kanako because he think her as his sister. Kanako Suzugamori - Kanako was older twin sister of Riko and also sister of Ren. She had know of Riko who leave them to find her own strength. She won't stop her as she understand of her feelings. She was decided to stay by Ren's side. She was also strong as Kai's level. She was close to Kai and think him as a brother. She will support Kai and Riko. Even she also upset to Ren, she won't leave him as she stay by his side. Aichi Sendou - Aichi was a newbie as he begin playing vanguard because of stolen card. He had meet Kai again after a long time. He was work hard to be strong player as Kai. He was also a shy person. Aichi had change because of Kai. He meet the people because of him. He want to be a same level as Kai. This is a story about Suzugamori's siblings which be Riko and Kanako.