Yui is a girl who's easily distracted by cute things. She's a crybaby but cheers up easily if she gets some sweets. She eats a lot of sweets but she does not gain any weight as she herself says. In many ways some may say she's a child, and making sure she practices is a problem. When Yui takes good care of something she sleeps with it. When she wants to remember something she forgets everything else. Yui's energy seems to come from cake. She is a clumsy, scatterbrained but optimistic and kind-hearted girl.

Yui gets good grades in school and but is easily distracted by trivialities. Yui is clumsy...