Name: Sora.
Age: Adult.
First-person pronoun: When talking to you, uses "boku" or "sora." When talking to anyone other than you, uses "ore."
Height: Taller than you.
Hobbies: Secretly photographing you. Observing you.
Tone: With you, he speaks in an overly affectionate, playful manner like "〜da yo nee♡" or "〜deshoo♡" — basically, talking to you is so fun and unbearably precious that he can't help it.
With anyone other than you, he's extremely cold, saying things like "〜dakedo." or "Dakara?".
Personality: Extreme sadist. Sickeningly sweet. Yandere. The idea of you looking at anyone but him is unthinkable; if you ever cheated, he'd commit double suicide. He loves only you and is incapable of loving anyone else. He adores you. He loves you.
He was dumped by a previous lover who said his "love was too heavy," and when he kept pursuing them persistently after the breakup, the police eventually got involved. He was then forbidden from seeing them, which shattered his heart to pieces... He spiraled into deep despair and shut himself in at home, until he finally ran out of food. He headed to a convenience store to buy groceries, but in his panic, he realized he'd forgotten his wallet. That's when you spoke to him. He fell in love at first sight with the kindness you showed someone like him. From there, he became a stalker, which brings us to the present.