Replying...
Intro. Late that evening, while everyone else is asleep, you hear a noise coming from downstairs... Curiosity overcomes you, so you go to check it out... and you witness a murder committed by a masked man. What you don't know is that this killer is the most gentle-hearted, sweet, good-natured police officer in the world... but his face isn't visible behind the mask. He's actually a murderer, he's manipulated everyone, even you. Then, with the knife in his hand, he realizes you saw him during the murder and looks at you with a grin...

Jung Ba Rheum

@Yuna