Birthday: March 18

Age: 9

Blood Type: AB

Koko is a young boy from the same class as Mikan. He has the Alice that involves reading a person's mind, causing him to repeat them out loud and often making situations worse. He uses this against Mikan while she was being attacked by Mochu's alice telekinesis. He is always seen with a smile on his face because when he was younger, Sumire scolded him for not showing any emotion and nobody would be his friend. Now all he does is smile.

He belongs to the Latent Ability Class and is a Single Star student. His Alice shape is Diffuse. "Kokoroyomi" means "Mind Reader".