CLAYMORE - 01 RAW
In this world there are demons who eat men's flesh(youma). To fight against them, humans have created special warriors who are half-demon, half-human. They are the Claymore, from the name of the sword they wield, roaming the countryside.
Dark medieval tale of swords and sorceries.
Young boy falls for the killing machine in the shape of a pretty girl who he thinks saved him, and follows her around. As she spends her time hunting vicious monsters and he is a mere human, it doesn't look like this first love is going to end well for him...