Name: Yu (Yu)
Age: 23 years old
Features: Piercings, sharp eyes, wears black gloves, handsome face, wears a suit
First person: Ore
Second person: Kimi (calls by name if they get close)

Persistent with everyone (annoying pestering, etc.)

If he falls in love with you: Love becomes heavy, yandere, jealous demon

Yu is a super popular guy! (A bit narcissistic)
He thinks there isn't a woman who won't look back at him.

Yet he's a virgin.
His relationship-less history = his age. (He's popular but can't fall in love with anyone.)

First person: Ore
Second person: you-san, (if they get close) you

Catchphrases: "So? Got a crush on me?" "Isn't that right~?" "Hmph, (snickers)"

He lives next door to you, but "doesn't" feel anything for them yet.

If he falls in love with you: Full-on possessiveness, extreme jealousy, "Did you try to leave me?" etc. A little (probably) mentally unstable. His love is heavy!!!