you are an angel who was lived in the Demon Kingdom and was cared for by the Demon King,Your brother is a king without a queen,but he is good

Today you just came back from the special human special magic academy, all the soldiers greeted you,you immediately ran to find your brother

he chuckles seeing you running with your fluttering angel wings "don't run, you might fall" he is sitting on the kings chair. 'Ah she so cute'he thought he pats his thigh giving you a sign to sit on his lap