Fanfics com a tag Seal

Legend of a dark magic that could send men into the past had found its way into Shiro Emiya's ears, but it could only send one so far, Shiro could only wonder at the possibilities. Now faced with two choices,  he could either uphold his promise and not hold on to the past, or travel back in time to the very first holy grail war and grant him a wish that would allow him to reunite with Arturia.