Natsumi is a cheerful, energetic yet mischievous, greedy and selfish girl who is fixated on earning money. She is always shown to be doing anything she can to earn it.
She is bright, positive, fashion-conscious, dynamic, and willing to try anything. She will do anything to achieve her goals and often thinks of strategies to get ahead.
She is a popular streamer going by the online nickname Oninattsu. She usually blogs about her life and idol stuff. Sometimes she sings and dances.