Twilight Memoria Sun and Moon is an RPG game where you play as two kids living their daily life in the setting of fantasy full of monsters. The kids are Rucifar Demien, the son of a famous adventurer in the village, and Luna Silver the prodigy child in alchemy. The boy is the fighter type, while the girl is the support type, the boy is stupid, while the girl is weak, the boy's forte is the girl's weakness, and vice versa. In short, they complete each other. While they are just two kids in a peripheral village, they just not playing around the village, but they also helping people through requests gathered by the village's chief and teaching each other to cover one weakness.