In the afterlife, Rin would spend her time always watching Obito, just as she assured him long ago, and patiently waited for Obito to one day join her. Seconds later, as Kakashi passed out due to exhaustion, Obito who had witnessed the scene responded by viciously and mercilessly slaughtering all the enemy ninja in sight before holding Rin's body and vowing to recreate a world where he and Rin could ultimately be together again. Rin also used the last of her strength to whisper Kakashi's name before she died, with her death leaving the enemy ninja stunned and both Kakashi and Obito horrified. Rin, however, later chose to commit suicide rather than risk Konoha's safety which she achieved by intercepting Kakashi's Chidori, which was meant to hit a Kiri-nin, impaling herself and dying before the boy she liked with the two unaware of Obito's presence. Surmising the true reason she was made a jinchūriki, Rin - being unable to take her own life - asked Kakashi to kill her in order to protect the village, which Kakashi refused, stating that he had vowed to Obito to protect her by any means necessary. To ensure the retrieval of the tailed beast, various jōnin and Anbu-level Kiri shinobi were sent to "chase" after them. She was also branded with the Forbidden Individual Curse Tag and programmed so that the tailed beast would be let loose within Konoha once she and Kakashi returned to the village. Some time after the events at Kannabi Bridge, Rin was secretly kidnapped by Madara Uchiha under the guise of Kirigakure's doing, and had Isobu sealed into her.
Rin later returned with backup from Konoha, which caused the enemy-nin to retreat. With their situation looking grim, Guy used himself as a decoy to lead away the Iwagakure shinobi, and Kakashi went after him.
In the anime, it was shown that Rin was sent out on a mission with Kakashi and Guy. After Kakashi had recovered, the team went on to complete their mission and destroy the bridge. Minato would later arrive on the scene and defeat the Iwa-nin. Wasting no time given the very grim circumstances, Rin began the procedure immediately, after which, she and Kakashi were forced to flee when enemy reinforcements arrived and continued the cave-in. Before Obito "died" however, he asked Rin to implant his Sharingan into Kakashi's left eye socket to replace the latter's damaged one. Although they succeeded in rescuing her, Obito was crushed in a cave-in caused by Kakkō. She was later rescued by Kakashi and Obito. Rin's will, however, proved too strong and did not break even under the genjutsu. During the mission, Rin was kidnapped by Taiseki during the course of the mission, and Kakkō - another one of her captors - attempted to interrogate her using genjutsu to find out if she knew anything about Konoha's war efforts. After Kakashi became a jōnin, Rin would concoct a top-secret celebration for him much to Obito's dismay due to the fact that Obito had hoped to use the moment to presumably tell Rin that he loved her.ĭuring the Third Shinobi World War, Team Minato was assigned to destroy the Kannabi Bridge. She later watched with bated anticipation and cheered as Kakashi fought Guy during the third round of the exams with Kakashi defeating Guy. She later dressed Obito's wounds as Obito professed his pride in his clan, and his dream to be Hokage. Before they could attack as a team, though, Rin was shocked to see Obito move to attack, but before Obito could do anything, he was knocked down by Guy. While in the forest, they were confronted by Might Guy, Genma Shiranui, and Ebisu. When Minato's students partook in the Chūnin Exams, Rin and Kakashi stood outside the gates of the Forest of Death waiting on the chronically late Obito to arrive. While initially, the team attacked Minato independently, easily being outmanoeuvred by the veteran ninja, Kakashi convinced Rin and Obito to work with him, ultimately earning Minato's approval to become his students as they passed the real test: showing teamwork. In the anime, for their final test to become genin, Minato tasked his potential students with taking one of two bells from him in actual combat. After graduating from the Academy a few years later, Rin was placed under the jōnin tutelage of Minato Namikaze, alongside Obito and Kakashi. Rin was also the first to congratulate Kakashi Hatake after he'd graduated from the Academy a year ahead of the rest of his class - Kakashi having gotten his own forehead protector after successfully performing the Clone Technique. Rin, however, handed Obito his entrance documents, which he was very thankful for. On the day of their entrance into the Academy, Rin was present when Obito arrived after the ceremony had ended, which left him dismayed.
Rin spent her young childhood playing alongside her best friend Obito Uchiha, often cheering him on when he struggled.