Rin Tōsaka
Rin Tōsaka (遠坂 凛, Tōsaka Rin) is a character from the Japanese visual novel and anime series Fate/stay night by TYPE-MOON.
A model student and idol of Shirō's school, Rin is secretly a sorceress and Master in the Holy Grail War. She is descended from a long line of sorcerers, and though lacking a formal magic education, is extremely powerful in her own right. Her father was killed in the 4th Holy Grail War, and she has trained since his death to succeed him. She is perceptive, resourceful and avidly competitive. Although she tried to summon a Saber-class Servant, she accidentally called Archer instead.
The voice acting for Rin is done by Kana Ueda.
Past
Two centuries ago, the Tōsaka House, in collaboration with the estates of Makiri and Einzbern, helped found the Fuyuki Holy Grail Wars. The land of Fuyuki City, which possessed the second greatest spiritual power in all Japan, was owned by Rin's ancestor, Nagato Tōsaka; at the behest of the Einzberns, he provided his property as battleground for present and future wars. Nagato was a kirishitan, as well as a pupil of Zelretch; these titles gave him considerable influence on both the Mage's Association and the Church, allowing the Tōsaka's to participate in the Holy Grail Wars, free from harassment by either organization.
Rin was reared as the successor to her family's magecraft, and was instructed by her father, Tokiomi Tōsaka, to prioritize sorcery over her own interests. Ten years ago, Tokiomi was selected as a Master in the 4th Holy Grail War, and Rin was entrusted to take care of the Tōsaka estate until his return. After her father was killed, Rin continued to perfect her sorcery, with some guidance from her guardian, Kirei Kotomine. To divert attention from her private life, Rin has diligently strived to earn the admiration of her peers, even though she is secretly stingy, tomboyish, and a slacker.
Although Rin resents the sacrifices she has endured for the sake of tradition, she is fiercely competitive and eager to prove herself as a skilled and capable sorcerer. She was immensely disappointed at summoning Archer and ended up in a quarrel with him; however, the duo soon reconciled their differences and quickly got along.
Abilities
As the Tōsaka’s successor, Rin excels in transformation of energy, which includes storage of Mana in objects. Since the amount of power a human can generate, hold and materialize at once is limited by the body's resistance and number of magic circuits, she constantly charges jewels, which are capable of holding more power, with a daily supply of Mana. When needed, she can unleash the preserved energy to give a devastating attack equivalent to a rank-A spell, as seen in the fight against Berserker in the Fate scenario.
Her most common attack is the spell known as Gand, which concentrates Mana into a finger to subsequently fire them as bullets, though Rin's profeciency at the spell shoots them more like a gatling gun then a pistol. Rin used this against Shirō at school and, later on, against Berserker. It had no effect on Berserker.
Role
Rin narrates the prologue in Fate/stay night, explaining her first three days in the Holy Grail War. During the prologue, Rin reveals to Archer that she is only participating in the Holy Grail War because of her desire to win. During those three days, she managed to use two command seals on Archer, one to force Archer to obey her and the other to recall Archer before he is killed by Saber.
Rin is the heroine in Unlimited Blade Works, and has romantic feelings for Shirou. In Heaven's Feel, she uses the Jeweled Sword Zelretch to defeat Sakura Matō. Rin and Shirō become partners in every scenario.
Rin also appears in Fate/stay night's sequel, Fate/hollow ataraxia, when she wields the Kaleidostick, another of Zeltretch's inventions, which when activated, the Kaleidostick transfers knowledge from an alternate version of its user into its current wielder, in addition to providing an ample source of Mana. However, the Kaleidostick dislikes its creator, and frequently manipulates its user into humiliating situations. In Fate/hollow ataraxia, the Kaleidostick is responsible for transforming Rin into the magical girl Kaleido-Ruby.