Rin

Rin (リン Rin) is a character in the Yu-Gi-Oh! ARC-V anime. She is the Synchro Dimension counterpart of Yuzu Hīragi (from the Standard Dimension), Ruri Kurosaki (from the Xyz Dimension), and Serena (from the Fusion Dimension).

Appearance
Rin has shoulder length aqua green colored hair with two light green side tails and orange eyes. She wears a pair of blue studded earrings. Her outfit consist of a blue and white jacket with pink pads on the shoulders and elbows, pink shorts and white and pink boots that reach up to her thighs. Her hairstyle is also vaguely similar to Yūri's with a lock of hair sticking up over her head like Yūya. Like Yuzu, Serena and Ruri, she also wears a bracelet.

When at the orphanage, she wears a plain sleeveless pink shirt with a tiny deep pink ribbon on the chest area. Her Riding Duel outfit consists of a predominantly white one-piece short-sleeved jacket-miniskirt combination with light pink shoulder pads and hot pink markings, in addition to back pockets; long white gloves with light pink elbow pads that extend over her elbows, hot pink pants, and white knee-length form-fitting boots with light pink kneepads.

Personality
According to Yūgo, Rin acts a lot like mother to him. She often reprimanded him for doing things he shouldn't be doing, much like how a mother would scold her child, something that sometimes annoys Yūgo. She also always scolds Yūgo for his tendency to talk carelessly without thinking of how other people feels. Nevertheless, she is very close with Yūgo, who has feelings for her.

Etymology
Rin literally translates to "phosphorus".

Past
Rin is Yūgo's childhood friend. She and Yūgo lived together in the slums of city as orphans. They were inspired by Jack Atlas and perfected their Dueling skills to later challenge him to a Riding Duel in the Friendship Cup. At one point after the invasion of the Xyz Dimension, Rin sensed that someone was following her and asked for Yūgo's help to look out for her. One night, Rin got separated from Yūgo and met her pursuer. She Dueled him, but lost and tried to run away from her pursuer, but got cornered in the ally and was captured by Yūri.

Battle Royale
During the Battle Royal of the Maiami Championship, Yūri mentioned that Yuzu greatly resembles Ruri and Rin. Yūgo later saw Yuzu and hugged her, mistaking her for Rin.

Serena vs. Yūgo
During Yūgo's Duel against Serena, he was confused by Serena's resemblance to her and he imagined Rin and him Dueling in the Friendship Cup.

Reunion with Yūgo
After Dennis lost to Kaito, he revealed that Rin was being hold captive in the Eastern Tower of Academia. Once Yūgo defeated the guardian who defended the Eastern Tower, Apollo, Yūgo entered the tower and finally reunited with Rin, who was surprised to see him. Relieved and happy that they finally meet again, Yūgo tried to hug her, but Rin instead hit him on his stomach. Rin then tearfully called Yūgo an idiot for coming late, telling that she had been waiting for him all this time before she finally hugged him. However, unbeknownst to Yūgo who was hugging her back, Rin suddenly smiled wickedly, under control of Reo's subordinate.

Trivia

 * Like Yuzu, Rin seems to be very fond of the color pink. Her clothes, her Riding Duel suit, her helmet, and her D-Wheel all have color of pink.
 * Her Hair color resembles the Rings when a Synchro Summon is performed.