Katsumi Nakase

Katsumi Nakase (中瀬 克実, Nakase Katsumi), who goes by the cosplay name Fubuki, is a side character in Steins;Gate 0 who is mentioned in Steins;Gate. She is a cosplayer and friend of Mayuri Shiina and Kaede Kurushima. In at least one of the Alpha Worldlines, she helps out at MayQueen+Nyan² as a waitress after Mayuri's death.

Appearance
She has short, light brown hair styled in a fringed bob hairstyle and brownish eyes. She typically wears a bright-yellow jacket with a black zig-zag pattern on its sleeves over a beige hoodie which she wears over a pink shirt.

Personality
She is described as boyish and athletic. She frequently flirts with Mayuri.

Background
She is a second year high school student and friend of Mayuri and Kaede. She met and became friends with Mayuri Shiina at an event, who would proceed to sew cosplay outfits for her. On one occasion, Fubuki cosplayed as a male character and got more attention from girls than she did from boys.

Visual Novel
Fubuki is one of several who contracts the new encephalitis disease, i.e. develops a higher degree of Reading Steiner. As a result of this, she begins to have flashbacks to Mayuri's many deaths in the Alpha Attractor Field and later of World War III occuring earlier in one of the possible Beta worldlines.

During the Future Gadget Laboratory's Christmas Party, she and Rintaro Okabe both collapse as the world line changes to one where World War III has begun earlier than Suzuha Amane foretold and where the Soviet Union still exists. A man by the name of Shimoyama interrogates both her and Okabe, tricking both of them into revealing that they know of an alternate worldline where the USSR had not fallen.

After the worldline changes mysteriously once again, Okabe discovers that Fubuki is still hospitalized after collapsing from Reading Steiner's effect on her body, so he, Mayuri, and her friends go to visit her. While there, Okabe confides in Katsumi the secrets of Reading Steiner and worldlines, which Professor Alexis Leskinen later learns from her. It is heavily implied that Professor Leskinen brainwashed Katsumi to obtain this information.

Trivia

 * Due to her boyish appearance, Katsumi is better known for cosplaying male characters than female ones.

Etymology

 * The name Katsumi means "overcome" (克) (katsu) and "fruit, good result, truth" (実) (mi).
 * Katsumi's surname Nakase means "middle" (中) (naka) and "swift current, rapids" (瀬) (se).