Kokoro is a very kind girl who has a gentle and optimistic personality to match and she is interested in plants and she is very knowledgeable in the "language of flowers". She doesn't speak too often, choosing to think before speaking and thinks about others more than herself. Her kindness is treated with a welcome by her more feisty comrades. During scenes of tension, she is never the breaker or starter and sits by watching usually. She was depicted as someone going with the flow.