Fate/stay night - Season 1 - Eps 16: The Sword of the Promised Victory
The battle is at the turning point, where Rin is about to be squashed by Beserker and Saber is unable to save her. As a last resort Saber decides to use her Noble Phantasm to defeat Beserker, no matter how it would affect her. Realizing that Saber could disappear from this, Shirou forces her to stop and decides to take matters into his own hands.The advancement of Shirou's character as we find what he is really able to do.
About Fate/stay night

Title: Fate/stay night
First Air Date: 2006-01-07
Last Air Date: 2006-06-17
Status: Ended
Rating: 7.3/10 (from 209 votes)
Language: JA
Seasons: 2
Total Episodes: 24
Network: Teletama
Genres: Animation, Sci-Fi & Fantasy, Action & Adventure
Production Companies: Studio Deen, Notes
Synopsis
Shirou Emiya lost his parents in a fire when he was young and was later adopted by the sorcerer Kiritsugu Emiya. Shirou is drawn into the Holy Grail War summons a female "Servant" known as Saber to protect him and obtain the Holy Grail.
Cast

Noriaki Sugiyama
Shirou Emiya (voice)

Ayako Kawasumi
Saber (voice)

Kana Ueda
Rin Tohsaka (voice)