Chiyo Mihama (美浜ちよ) is one of the main characters in the manga and anime Azumanga Daioh. Only 10 years old at the beginning of the series, Chiyo is a supergenius who was able to bypass five grades and enter an elite high school. Consequently, she is one of the smartest students in the entire school, besting even Sakaki and Yomi. Chiyo is the object of much envy from those around her, considering not only her extraordinary smarts, but the fact that she is from a wealthy family and owns a summer home where she, the other girls and their (female) teachers spend their summer breaks. She and Sakaki hang out frequently, as the two both enjoy cute things (and Sakaki enjoys the company of Tadakichi, Chiyo's pet Great White Pyrenees).