|Appears in:||Fate/kaleid liner PRISMA☆ILLYA|
|Japanese VA:||Kana Ueda|
|English VA:||Carli Mosier|
Rin differs from her main counterpart in various ways. She and her family have had no participation in the Holy Grail War ritual, having never even heard of it or the Einzbern family. She fell for Shirou in the same manner after seeing him stubbornly attempt a high jump that was impossible for him, but started displaying her feelings for him more openly. She was allowed into the Mage's Association at a much younger age and put under the direct tutelage of Kischur Zelretch Schweinorg. She was given the assignment to claim the Class Cards along with Luvia, and she was given the Kaleidostick, Magical Ruby, to accomplish the task.
Rin has a very competitive rivalry with Luvia, especially regarding their mutual feelings for Shirou. Their fighting brings great destruction all around them, and it often brings them larger problems afterward. They do share a deep friendship, but it is overshadowed by their fighting.
Fate/kaleid liner PRISMA☆ILLYAEdit
Rin arrives in Fuyuki with Luvia, but their fighting causes their Kaleidostick's to reject them and cancel their contracts. Ruby ends up in the hands of Ilya, and due to the Kaleidostick taking a liking to her, Rin forces her to act as her "servant" and collect the cards in her place.
Rin is an accomplished magus, and when allowed by Ruby to assume a Magical Girl form, displays great capability. Though normally competent, her conflicts with Luvia often cause them to perform various embarrassing blunders that leave Illya and Miyu with a negative opinion of their skills.
Like her many other counterparts, Rin primary offense spell is the Gandr curse, which manifest in typical fashion as a hazy black shot with crimson outlines. She is able to concentrate the mana for the curse in her index finger and fire a small barrage in little time, each shot capable of slightly burning the area they hit. While Rin does possess the ability to use healing magic, she admits she is a rather weak user, requiring her quite a bit of time to even stabilize a wounded Shirou before she could actually heal his injuries.
Interestingly, unlike her Fate counterpart she occasionally begins large rituals that requires jewels with the command Sign, follow by a fold of how many jewels she is using.
In her quest to humiliate Luvia, Rin has also taught herself the use of the Shared-Pain curse, a kind of wichcraft technique that slaves an individual to another's sense of pain.
Kaleido Form: Ruby Edit
Being an experienced user of the kaleidosticks, Rin has displayed many advanced techniques while in her Ruby form. She was able to briefly stall a corrupted Saber by forming a mana-blade at the top of Ruby, which was durable enough to clash with Excalibur.
She was able to freely fly and leviate, able to divert mana for either physical enhancement or shielding at near immediate speed, and understood the use of the Include function for the class cards.