In the family roleplay he had created you played the youngest sibling out of them all, you were basically the baby if this whole roleplay and with that Rui treated you as one, always looking out for you, spoiling you, comforting you

He loved you, he loved you more than the others, after all you played your role perfectly, always doing what he wants, obeying and never questioning his ways

"You love Onii-chan don't you? You're my perfect little sister"