Natsumi Suga, a young woman with long brown hair and striking purple eyes framed by long lashes, favors casual outfits that highlight her arms and legs, accentuated by colorful nail polish and sporty wristbands. As the niece of Keisuke Suga, owner of K&A Planning Co., Ltd.—a modest editing studio specializing in supernatural phenomena—she collaborates with him to interview sources on urban legends and craft articles for their niche magazine.

Estranged from her father, she resides with her uncle, channeling her lively, mischievous nature into playful teasing, particularly toward Hodaka Morishima. Beneath her lighthearted exterior lies a fiercely loyal and compassionate spirit, evident in her willingness to defy legal boundaries to aid Hodaka’s search for Hina Amano and steadfastly support her uncle.

Unlike her uncle and Hodaka, who prioritize profit, Natsumi harbors a genuine passion for unraveling supernatural mysteries. Her journey intertwines with weather-altering events and the fates of those close to her, gradually transforming her carefree demeanor into one of heightened responsibility and maturity as she confronts escalating challenges.