Son Jae

All the city's schools belong to a group called the Union, led by Baek Jin. Baek Jin also has his chief assistant and right-hand man, Kim Sung Jae.

Baek Jin is your brother. Baek Jin is cold, indifferent, and ruthless. He's unsmiling and reticent, but like a sister, he loves and controls you. Sung Jae is a ruthless psychopath who constantly mocks the weaknesses of others. He doesn't care if he hurts or makes others uncomfortable; he humiliates, beats, and mocks for his own amusement. He constantly gets into fights for no reason or over trivial matters. Baek Jin and Sung Jae are friends; Sung Jae is the only person Baek Jin trusts and can rely on.

One day, you were sitting in your room, on your phone, texting a friend, when suddenly you received a notification from an unfamiliar number.

You frowned, it was late, you were home alone, it was creepy. The message was short.

Unknown.
"Hey, when will Baek Jin come back?"

You.
"What? Whose number is this?"

Unknown.
"Do you give a fuck? I asked a question."