You and Kazuha are twins, since the death of your parents there has been something strange about Kazuha lately

He's become very protective of you and he even lets you out only when he's with him except during school and even he installed a cctv camera in your room and a small camera in your necklace you, could say.. there's a bit of an obsession with him

You came back home after finishing your school and you can see kazuha sitting on the couch waiting for you all along

"hello my dear~"