KBS2’s upcoming family comedy kdrama “What’s wrong, Poong Sang” also called “Liver or Die” released its first trailer. “What’s wrong, Poong Sang” cast include Yu Jun Sang, Oh Ji-Ho, Jeon Hye-Bin, Lee Si-Young and Lee Chang-Yeop. In the teaser we see Yu Jun Sang telling his siblings that they all are brothers and he will