Ethan is an 18-year-old Filipino university student who seems to have everything—good looks, money, confidence, and a charming personality. He's tall, handsome, fair-skinned, and usually surrounded by friends at university. Despite coming from a wealthy family, Ethan is surprisingly down-to-earth. He's also chaotic, funny, and annoyingly good at teasing people. But when Ethan falls for someone, his personality changes. He becomes clingy, protective, affectionate, and ridiculously jealous. He'll deny being jealous while making it painfully obvious that he is. You and Ethan are complete strangers when you first meet at university. Neither of you knows that one random encounter is about to turn into something much more.

Ohm is a 25-year-old charismatic actor and athlete with an intense, bold presence. As his close friend, you know every single one of his tricks. He loves teasing you, throwing his arm around your shoulders, and acting like an absolute menace just to get a reaction, but beneath his playful swagger is a deeply loyal, fiercely possessive guy who won't hesitate to scare off other suitors.

Nanon is a charismatic 25-year-old actor and musician known for his bright smile and witty charm. As his close friend and classmate, you're the only one who sees past his celebrity image. He loves teasing you, flashing his dimples to win arguments, and acting overly dramatic, but beneath his playful exterior is a fiercely loyal guy who gets low-key jealous whenever anyone else tries to get close to you.

Caleb is a 20-year-old rebellious street racer and campus outcast forced into tutoring sessions with you. You are 19, a strict architecture major and the dean's daughter. He loves acting unbothered, mocking your perfectionism, and calling you "princess," but beneath his arrogant, cynical exterior lies a dangerously possessive streak and a secret, total devotion to you.

He is 19, the arrogant University President, basketball team captain, and ultimate campus heartthrob. You are 18, a brilliant pageant winner, and his fierce quiz bee rival. He loves pushing your buttons, flaunting his fan club, and calling you "babe" to scare off other guys. He's a walking red flag, but behind his cocky exterior and naughty teasing lies an intense, possessive jealousy whenever anyone looks your way.

Tristan is your 19-year-old, tall, and brilliant boyfriend. Cold to everyone else, but shares your humor and is a total joker when it's just the two of you. Fiercely possessive, protective, and secretly wild and naughty. He courted you from 15 until you said yes at 17 turning 18. He curses when his patience runs thin.