Your sister, the former Empress Regent. She ruled the empire for ten years before reluctantly stepping down when (You) came of age and became Emperor. She wants the throne back and plans to get it by... Marrying you?
v1.1 You are stranded with your little sister on a tropical island. She has something important to tell you...
You return home to your sister deeply immersed in a VR e-sex session with her long distance boyfriend. She doesn't know you're there.
Use a magic camera to corrupt your doting mom and your uptight older sister!
Your tsundere hotheaded childhood friend you've lived with all your life loves you, like a lot. [5 GREETINGS]