Yuki Amane, a cosplayer and university student, navigates complex timelines as Itaru Hashida’s eventual wife and mother to Suzuha Amane. Across the Alpha Attractor Field, she meets her demise at SERN’s hands in a dystopian future, but not before orchestrating a distraction with fellow cosplayers to shield Itaru and Okabe Rintarou from Rounders in 2011. A darker iteration in *Rebellion of the Missing Ring* sees her fatally ambushed by Kayano while crafting a maid outfit for Suzuha. In the Beta Attractor Field, Yuki emerges as a recurring figure initially viewed with suspicion by Okabe due to injuries mirroring an assailant’s pattern—a theory later disproven. During the *Recursive Mother Goose* arc, she discloses learning a pivotal song from Okabe’s mother, a thread tying her to the lab’s legacy. Her bond with Itaru deepens through shared events: a chaotic Christmas party nearly disrupted by Suzuha’s misdirected aggression and a tense reunion in a fractured timeline where she feigns ignorance of Daru and Suzuha’s location. The *Vega & Altair* route exposes Kagari Shiina’s surgical impersonation of Yuki, who remains abroad studying while her double infiltrates Okabe’s circle. Within the Steins Gate World Line, Yuki casually references a fortune teller’s prophecy of motherhood within seven years—a nod to Suzuha’s impending existence—during a convention encounter with Okabe. Later media like *Robotics;Notes DaSH* solidify her marriage to Itaru and sustained contact during his globetrotting missions. Yuki’s bubbly demeanor and unwavering optimism balance Itaru’s quirks, though she chastises Suzuha’s adoption of terms like "moe." A cosplay virtuoso, she resurrects niche characters and competes in *Lightning Net* tournaments. Born in Ishikawa Prefecture (1988–1989), she temporarily shelved cosplay for career pursuits before reclaiming her passion. Her aesthetic shifts across media, often relying on wigs to embody diverse roles. Notable connections include her convention-forged friendship with Mayuri Shiina and her indirect shaping of Suzuha’s time-travel mission. While some timelines cast her as a resistance ally aiding lab members, others relegate her to fleeting appearances or off-screen influence.