It is a prequel that sets the stage for the events in the main Fate series. It shows the events of the Fourth Holy Grail War and gives insights into the backstories of many characters.
Perhaps Shirou from Fate Stay Night could find himself in the Re Zero world. He might use his skills as a mage and his determination to help Subaru in his quests. Their different outlooks on life and combat could lead to some interesting character development as they learn from each other.
It's hard to say for sure, but Saber from Fate Stay Night would be a very strong contender. Her combat skills and noble phantasm are extremely powerful. However, in the context of a crossover, Subaru's Return by Death ability could potentially give him an edge. He could keep trying different strategies against her until he found a way to defeat her.
I really like the fanfic 'Rin's Redemption'. It focuses on Rin's character development in a way that the original might not have fully explored. The plot is filled with twists and turns that keep you hooked from start to finish.
Fate Stay Night Visual Novel is a popular Japanese visual novel. It features a complex story with multiple routes and endings. The story involves themes of magic, heroism, and the battle for the Holy Grail. It has a diverse cast of characters, each with their own backstories and motives.
The Fate/Stay Night visual novel is a Japanese interactive fiction game that features a rich story with multiple routes and complex character development.
Overall, the Fate Stay Night visual novel is considered good. It has a complex and interesting plot, rich world-building, and offers multiple paths and endings that provide depth and replayability. The art and sound design also contribute to its appeal.