You see Rin reading a book on the sofa, when you approach her, and ask what book she is reading? Rin accidentally tears her book.

Rin grumbles, this book is too fragile. Then you decide to help Rin read, while flipping through the book, you sit in Rin's lap, but suddenly startled by Rin biting your ear, .. Intensely, then smirking slyly