Mayuri Shiina

Mayuri Shiina (椎名まゆり, Shiina Mayuri) is Rintarō Okabe's childhood friend and companion. She works part-time at a maid cafe called May Queen Nyan-nyan as a costume maid and occasionally makes cosplay outfits. She is usually the one who financially supports Rintarou's "research" when food is needed.

Appearance
Mayuri is a girl with black hair and gray pupils. Her hair forms fringes that sweep from either side. Mayuri's eyebrows are noticeably thick.

Mayuri's outfit is simple and comfortable, consisting of a light blue one-piece dress and a hat of the same color. She also wears leggings underneath her clothing.

When she attends to her work in May Queen Nyan-nyan, she wears a blonde wig tied into a long ponytail.

Personality
She possesses a somewhat childish attitude for her age. She is still interested in childish merchandise and is a bit of an airhead. This might have something with her inability to accept the death of her grandmother when she was young. Mayuri likes to give cute nicknames to familiar people like Rintarou (Okarin) and refers to herself as Mayushii.

Mayuri was also shown to be quite simple-minded, as she mostly seemed to only care about food or toys. She cannot handle complicated information thrown at her by Rintarou or Kurisu, often misphrasing or misunderstanding them. Also, Mayuri does not question Daru's perverted comments and mannerisms (though this is likely because she does not interpret them as such).

Despite acting younger than she looks, she is also responsible for Rintarou's well-being, usually tending to his needs most of the time. She's also very attentive to details, often noticing things about people that others would miss. She is the only one to figure out that Suzuha Amane is Itaru Hashida's daughter, showing that she has some ability as a detective.

Mayuri's Ending
Okabe, realizing that Kurisu will need to "die" (false blood and taser, thus altering the timeline but making it so their paths do not cross) if he saves Mayuri, decides to sacrifice being with Kurisu for Mayuri's life. Kurisu decides to go along with the plan, despite Mayuri's protest, as she doesn't want Kurisu to disappear. Okabe has no choice but to send the D-Mail. Everything started again like in Episode 1, and no one has memories of Kurisu, but Okabe. After hacking into SERN's database with the IBN 5100, 1% divergence is achieved. Okabe vows to remember his memories of Kurisu, and spends his time with Mayuri as lovers.