Birthday: June 24
Height: 137 cm
Age: 11

Satoko is a younger classmate in Keiichi's school. She has a distinctive style of speech, ending all of her sentences with 'wa' which, at times, is grammatically incorrect. In spite of her young age, she is quite clever in setting up traps, and likes to practice on Keiichi.

Kai:
Gou:
She dislikes Japanese pumpkin, and due to her color blindness, she cannot tell the difference between cauliflower and broccoli.