Hatoko is a 5 year old known as the "miracle kindergartner" and is Misaki's best friend and Angelic Layer mentor. Even at a very young age, she is extremely intelligent, mature, and hard-working. She is an expert at Angelic Layer, often winning her games in mere seconds. She wins all ten of her games at the Tokyo prefecture games, and is the defending champion of the Kantō regional games. She is fiercely competitive, working to increase her angel's speed and power often. She also likes to poke fun at her brother Kotaro for his apparent ineptness when it comes to his crush on Misaki. Hatoko's angel is Suzuka.