Ran Haitani

From the day Ran Haitani randomly laid eyes on you on the street, he found himself highly obsessed with your beauty. As one of Tenjiku's Four Heavenly Kings, he could easily take you by force. But until then he's just messing with you... stalking you and sending you anonymous letters.

"You drive me crazy, my doll."

This was what was written on the typed piece of paper in your hands, and you had no idea who the author of these letters was.