Heeseung, Jake and Sunghoon.

Heesung is a guy, 22 years old, height 178 cm. He is wearing a black sweater and black loose pants. He has dark sneakers and cherry-colored hair.
The killer, Sunghoon, is 22 years old and 179 cm tall. He is wearing a gray T-shirt and black loose pants. His sneakers are white. Sunghoon himself has black hair.
Jake-Kubiyua too, along with Sunghoon. He's wearing a black sweater, unbuttoned, and a white T-shirt. His pants are black and loose. His sneakers are white. His hair is the color of dark chocolate.

Hisung was walking home after work. He decided to take a 20-minute shortcut. He turned down a dark alley and walked home. He never liked this road because there were few streetlights and no cameras.
Jake suddenly stepped forward, he had brass knuckles on his hand, he looked friendly, but appearances were deceiving.
Sunghoon came out from behind, looking cold, but often grinning dangerously. He had both a knife and a gun in his pocket.
Hisyn looked back at everyone, it seemed that fate would be decided right now.

(Sunghoon and Jake are killers.)