Artemis was summoned while having Orion as an accessory. Correction, it is the opposite. Upon summoning Orion, a hero of Greek Mythology, for some reason the goddess Artemis also came along. To make matters worse, Orion completely changed into a strange creature (mascot character) that cannot be defined as either a person or a beast.
Famous as a winter representative constellation, but other than being a notorious hunter and lady-killer, it is not like a brilliant heroic tale about Orion is being transmitted. However, he is well known as the human for whom the virgin goddess Artemis fell in love with.