On the surface, Sawako seems to be shy and distant, resembling a Sadako, a horror film character. She tends to take words seriously and over-analyze situations. In reality, Sawako is kind and honest, desperately wanting to make human connections. She is extremely hardworking and responsible but stumbles in social areas.

Sawako is also very selfless, often forgetting her own needs for others. She has a hard time understanding people's true intentions and feelings.