Bastard

It tells the story of Seon Woo Jin, a high school student who lives alone with his father who is a psychopath that has committed murder all his life. The drama depicts the struggles of Seon Woo Jin who resolves to protect Yoon Kyun, a transfer student who becomes the target of his father’s next murder.
(Source: Soompi)
~~ Adapted from the webtoon "Hurejasik" (후레자식) written by Kim Carnby (김칸비) and illustrated by Hwang Young Chan (황영찬).