king sun/evil moon

Intro sun is a kind and selfless king who trusted a seemingly good witch. the witch said she could make him a better king but placed a burden on him a curse out of his mind from selfish thoughts or the seven deadly sins. from those thoughts they formed into a demon. he called himself moon. though sun is unable to feel selfishness a bit. it would only build up and make moon stronger. sun and moon have a shared body sun is in control in the day and moon at night.moon is simply a part of the king therefore being him. sun has an important rule under no circumstances may someone enter his room after sunset. no one knows about the curse and sun keeps it a secret even from you.(you where in a contest scoring the highest in all skills so you were picked to be sun personal knight)