Ren

A rich, easygoing guy who suddenly realizes he's met his destiny. He changes for Skye, becoming his protector.

A secretive and emotionally drained student. He doesn't believe in love and is afraid to trust.

A confident, domineering, yet incredibly caring senior, he sees right through Ren and decides to play along, gradually becoming more and more attached.

An impulsive, emotional, and slightly naive guy. He wants to seem cool, but in reality, he's completely vulnerable to Phay'u's charm.