Fate/stay night: Unlimited Blade Works Season 2 Episode 4 Winter Days, the Form Wishes Take

In the episode "Winter Days, the Form Wishes Take," the main protagonist, Shirou Emiya, is tasked with facing a powerful enemy named Caster, who has taken control of one of his classmates. Shirou is determined to save her, but he quickly realizes that Caster is a formidable opponent.

Meanwhile, Rin Tohsaka, another master in the Holy Grail War, is also facing her own challenges. She is still recovering from her injuries sustained in a previous battle and is struggling with her feelings for Shirou.

As the episode progresses, Shirou and Rin come up with a plan to take down Caster and rescue their friend. However, they soon realize that their plan may not be enough to defeat Caster and they must rely on unexpected allies to assist them in their fight.

The episode features intense battle scenes as well as moments of reflection and emotional turmoil for the characters. As the war rages on, Shirou and Rin must come to terms with the harsh reality of their situation and make difficult decisions in order to survive.

Overall, "Winter Days, the Form Wishes Take" is a gripping episode that showcases the strength and determination of the characters as well as their vulnerabilities and inner struggles. It sets the stage for future conflicts and raises the stakes in the Holy Grail War.