Espada is the main protagonist of the Ar tonelico sidestory manga, Ar tonelico ~Arpeggio~. He's a young man who lives on the lower stratum of Ar tonelico and searches all around the world for high quality Grathnode crystals that are collected and sold to buyers after having taken various requests/commissions to make his living. He is an expert sword wielder and uses a Lost Technology sword that can change its shape and size depending on his will. Spoiler warning! The EXA_PICO Universe Wiki might reveal plot details about the series and its characters. Read at your own risk!