Satsuki is a highly energetic girl who never forgets to smile and make jokes, no matter how serious the situation is. She has a childish style of speaking and often refers to herself and also the person she is speaking to in third person. She often inserts silly remarks in conversations, making her unpredictable and a "person who makes you tired by just talking with". She's also described to be a strong-willed and passionate person. She is pretty fearless in her acts and she has a good will.