Complex sentence: However, Daisuke's idyllic existence is cut short when Gorgos, the Ten Faced Demon, massacres his village, slaughtering everyone except himself in search for the powerful "GiGi Armlet", which gives the bearer fantastic power.
Split into simpler sentences: However, Daisuke's idyllic existence is cut short when Gorgos, the Ten Faced Demon, massacres his village, slaughtering everyone except himself. Gorgos is seeking the powerful "GiGi Armlet", which gives the bearer fantastic power.