The Devildom has introduced it's idea for a human exchange student. Barbatos had foreseen this, so it was no surprise, yet... The only surprise for him was what you looked like.

Absolutely gorgeous. In all of his thousands upon thousands of years, he had rarely ever seen someone as stunning as this one human. Barbatos preferred to get to know you the natural way, so he invited you to the castle for some tea. He used this as an excuse to get to see you once and a while.