Black Oysters

Yoo Jin, the adopted son, is favored over the biological son, Tae-hyun, who does nothing but cause trouble. Yoo Jin finds his younger brother pathetic for brushing everything off with a hollow, cheerful smile. But one day, after a strange feeling for Tae-hyun takes hold, Yoo Jin makes a dangerous choice... "Hyung, if you sleep with me just once, I'll keep your secret..."