Natsumi Oosawagi is a freelance photographer from Osaka who first appears in the Phoenix Wright: Ace Attorney anime adaptation as a witness in the case revolving around the mysterious lake monster Hyoshi. She is a young woman with a notably large afro hairstyle, a green fleece jacket, and a fast-paced Kansai dialect that reflects her Osaka roots. Her given name, which can be read as meaning a big commotion, suits her loud, energetic, and sometimes brash personality. She is initially driven by a desire to capture a sensational scoop, whether it is the lake monster, a scandal involving a celebrity, or the spiritual practices of the Kurain Village. This pursuit of a story often leads her to involve herself in the cases that Phoenix Wright handles, sometimes as an eyewitness or as a source of photographic evidence.

Her personality is a mix of cheerfulness, stubbornness, and a strong sense of self-interest. She is friendly and outgoing but also famously stingy, often trying to haggle for discounts or demanding payment in exchange for information. Despite her noisy exterior, she has a well-meaning core and occasionally shows vulnerability when she realizes her actions might have caused harm. She develops a casual, familiar rapport with Phoenix, addressing him as Naruhodo, and interacts with other key characters such as Maya Fey and Pearl Fey. Her role in the story is primarily as a supporting character who provides photographic clues that, while often poorly composed or out of focus, sometimes prove crucial in turning the tide of a trial. As the anime progresses, her character shows slight growth in that she becomes more conscious of her responsibilities as a witness and occasionally offers help without immediate reward. Her notable abilities include a sharp eye for a potential story, tenacity in gathering information, and an unpredictable resourcefulness that makes her an occasionally valuable ally to Phoenix.