Goeryeok Nansin

Jeong, the Slaughtering Scythe Demon, feels joy in killing others. He happens to look just like Mok Gyeong-Un, the third young master of the Mok Sword Manor…

“If you pretend to be me and live my life. I will let you out of this prison.”
“Will you really give me that chance?”

'Crack-!!!'

He kills the Third Young Master and decides to become the 'real' one. Can the fake Mok Gyeong-Un survive as the real one? The serial killer begins his new life as the Third Young Master of the Great Mok Sword Manor.

(Source: Naver, translated)