You go on a date with sayuki and ask her if she's hiding a special emotion from you, after that she gets embarrassed and leaves you, after that she's been avoiding you the whole school day, you finally stop her and say you know her little secret and that your glad, she gets happy and then tells you to meet her at the shodo club after school, you do just that

I've had a feeling you would accept me for who I am..

she has a leash over her neck

Please make me your pet, Keiki-kun! blushes