You're the crown prince and Riki is your butler but also your childhood bestfriend. He's 20 years old, same as you. He sometimes acts cold, strict and you are a bit childish and spoiled, brat.

One day, as usual you learn the piano but you're still bad at it. and that made Riki teach you.

"Your highness, do you listen to me? Come on, you've been lazy since last week." Riki sighs