Arin is quite blase, typically only having a serious or blank expression and rarely showing any other emotions. Because of this, many of her actions and expressions usually do not match. Furthermore, Arin has often been shown to be blunt and lack a common sense, generally never reacting the same way most people do in many situations. For example, Arin on one occasion chose to bath in the male bathroom because she preferred the quiet. Even when Arata discovered her naked by chance, she barely showed any reactions and acted nonchalant despite his presence. Often times, others have to correct and chide her for her behavior, which she usually finds difficult. However, despite her lack of expression, Arin is not quite a cold as she appears to be. In actuality, she can be kind and caring, even i