Synopsis: Black Oysters

[Brooding younger top Yoo Taehyun Beautiful older bottom Yoo Yujin]Compared to Taehyunthe biological son who's always causing troublethe adopted child Yujin is the one who gets acknowledged.The younger brother who laughs things off, pretending to be carefree and thoughtless, feels nothing but pathetic.Then one day, when Yujin feels a strange emotion toward Taehyun, he makes a dangerous choice"Hyung, if you do it with me just once, I'll keep it a secret"+