The Unyielding One of the Fate of the Holy Grail

Why was I born as a human being? Should I surrender to this fate or change it like me? The protagonists should be Illya and Sakura who particularly like the Holy Grail! When I find myself traveling into the Holy Grail again! Decided to change her destiny! So what about the glittering gold! So what about the lock of heaven! See how the protagonist tortures him thousands of times in the end! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.