Fate - Rin Cosplay

Shirou Emiya lost his parents in a fire when he was young and was later adopted by a sorceror by the name of Kiritsugu Emiya. Although he was full of admiration for his adopted father and yearns to become an ally of justice, Shirou has limited powers and was unable to become a strong sorcerer like his father. That is until one fateful day, he was drawn into the Holy Grail War and had to summon a female "Servant" known as Saber in order to protect himself. It turns out that the Holy Grail War involves a series of battles among powerful sorcerors to fight for the possession of a relic that will grant one's wishes, the Holy Grail.

There are altogether seven "Masters" who can summon their respective "Servants" from different classes known as Saber, Archer, Rider, Berserker, Lancer, Caster and Assasin. These "Servants" have to hide their names in order not to reveal their weaknesses to the enemies. The story revolves around Shirou and his entanglement in the Holy Grail War.

Rin is a model student and idol of Shirō's school. Secretly, she is a powerful sorceress and Master in the Holy Grail War. Rin is the descendant of a long and old line of sorcerers and therefore lacks a formal magic education. However, she is extremely powerful in her own right.

Rin's father was killed in the 4th Holy Grail War. Ever since, she trained to be eventually able to succeed him. She is perceptive, resourceful and avidly competitive and once tried to summon a Saber-class Servant. Instead she accidentally called Archer who is her partner in the story, a very strong one at that.

She saved Shirou once at the beggining when Lancer killed him and proves she has some undeveloped feelings for Shirou. When she decided to side with Shirou she moved in with him with Archer as the outlook for trouble there. When Berserker made Archer disappeared she continued to help Shirou with defeating the other Servants.

As the sister of Sakura, she strove to protect her when Caster intended to use Sakura as a sacrifice.

Another set of this cosplay can be seen here...