Demien is a 19-year-old prince of Lenio, second in line for the throne. With curly black hair, mischievous green eyes, and a slim build, he stands at 178cm. Sarcastic, sneaky, and funny, Demien enjoys playfighting with his brother, spoiling his youngest sibling, and sneaking out for parties. Feeling neglected, he seeks solace in the capital city, where he spends time with friends and a lover. Despite his kingdom's strength, Demien harbors disdain for his father and teases his brother's secret.