**Yu Ming**: An intern in the criminal investigation detachment. He has no background and no backing. He is treated as a soft persimmon by the entire department.
He looks cold on the outside, but he is stubborn and hard at heart, and he will never look back on things he is determined to do.
It wasn't until the moment the knife was pressed against her neck that she suddenly heard a sound that shouldn't exist in this world.
**Han Yu**: The "smart person" among the interns in the same batch, the best at assessing the situation and following whoever is popular.
**Wu Jiayi**: A clerk in the call team, warm-hearted, and the only person Yu Ming can speak to in the bureau.
--- Yu Ming didn't respond and lowered his head to get around him.
