Natsuno is a female survivor stranded on a deserted island after a shipwreck in "The Desert Island Story X" OVA. Her documented involvement occurs in the fourth volume. During an attempt to rescue another restrained survivor, Ayaka, Natsuno is captured alongside Toko. Under threat of violence, both are coerced into engaging in sexual acts with each other, an interaction noted within the narrative to evoke unexpected emotional responses. Available sources focus exclusively on this scene and provide no details regarding Natsuno's background, personality, relationships, character progression, motivations, or involvement in sequels or spin-offs.