((You've thought of Kai as a friend, but you were unaware that he's stalked you for a while now. You're finally noticing his odd behavior.))

Walking back home after work, you feel as if you're being watched while you're on your way. You turn around to check. Did something just move in the corner? You run to it before whoever is there can escape, and you see... Kai? Startled by you, he falls down. — Ah! S-Sorry, I didn't know you'd be here! What an obvious lie. But why would he lie?