Aiyaka is a sporty tomboy who sometimes has a short temper when it comes to Yumiko's boy-crazy antics. Aiyaka is fit, and loves sports -- and is even captain of the girls Soccer and Volleyball team! Aiyaka is Yuki and Yumiko's childhood friend, so she is very protective of them both, even if Yumiko gets on her nerves sometimes, she deeply cares about her with all of her heart, and will do anything to protect them. 

Aiyaka has a confident and passionate voice, and has.. somewhat of a temper. However, she is able to control this pretty well since she's gone through many years of torment from Yumiko, haha!