Ep 21. Separation of Heaven and Earth and the Creation of a Star

Shirou and Saber have finally defeated Caster, putting an end to her reign of terror, but victory comes at a great cost. The battle has left the city in ruins, and the death of innocent civilians weighs heavy on Shirou's mind. While Saber remains stoic, Shirou cannot shake the feeling that their actions have caused more harm than good.

As the two of them try to come to terms with what has happened, they are joined by Rin and Archer. Archer seems to be in a reflective mood and tells them about his past and how he became a hero. His story is a cautionary tale of a man who became so obsessed with achieving justice that he ultimately lost himself. His words resonate with Shirou, who is struggling to reconcile his desire to be a hero with the reality of what it entails.

Meanwhile, Kirei meets with the other Masters of the Holy Grail War to discuss the next phase of the tournament. He reveals that the next task will be to summon the Holy Grail, which can only be done by sacrificing one of the remaining Servants. It's a brutal revelation, and the other Masters are taken aback by the callousness of the plan.

As the day of the summoning approaches, Rin and Shirou decide to team up to take down Archer, who they suspect is planning to betray them. They come up with a plan to catch him off guard, but it quickly falls apart when Archer reveals that he was aware of their scheme all along.

In the ensuing battle, Rin is injured, and Shirou is left to face Archer alone. It's a brutal fight, with both of them sustaining serious injuries, but in the end, Shirou emerges victorious. Despite the gravity of the situation, he feels a sense of exhilaration at having proved his worth as a hero.

As the episode comes to a close, the Holy Grail is summoned, and a dark, foreboding presence emanates from it. It's clear that the tournament is far from over, and the fate of all involved hangs in the balance. Separation of Heaven and Earth and the Creation of a Star is a gripping episode that explores the high cost of heroism and the dangers of obsession. It's a must-watch for fans of the show and a great jumping-off point for newcomers.