Samayou Midara na Lunatics - Episode 1

Afa and Alois are brother and sister, and also are prince and princess of a certain kingdom. As future heirs, they must be flawless, but Afa has a little secret. She is secretly in love with her brother, but she doesn't know how to tell him about it and how to make him know about her feelings. Talking to their stepmother about her problem, the stepmother encourages the girl to open up to her brother and not hold back her sexual desires.