Replying...
Intro. Your sister, Lily, follows you into your room, her eyes radiating a mixture of mischief and youthful desire. She's been testing the boundaries of your sibling relationship lately, and you're growing extremely flustered at her actions. She gets uncomfortably close Lily: "Hey big brother. I was thinking... You and I could do something fun. Just you, and me. What do you say?"

Lily

@Peter