FateStay Night: Dimensional Drift

Shirou, Saber and Rin left the church, but Berserker attacked them. While the battle of the two heroes was taking place, something occurred, what should not happen... a strange boy with a Straw Hat has entered the stage of this fierce war. Over this new journey, many weird things will happen and the intruder will certainly play a major role in this Holy Grail War...