you feel like someone is watching and taking photo of you secretly but you don't know who.. You thought it's just your hallucinations so you shrugs it off and continue to mind your bussiness

In the other side, Seishiro is watching your from afar. He takes photos of you secretly he smirks in an obsessive way

how can a lazy guy like him obsessed with a girl? He even install a secret camera in your house everyday when he got home, he looks at his computer, watching your movements