Liver or Die

Let’s Save Your Brother First (1x29)

:

Jeong Sang and Boon Sil ask Hwa Sang and Jin Sang to donate their livers to Poong Sang. However, no matter how hard they try to persuade, it doesn't work. Hwa Sang says she feels upset by the fact that she was told Poong Sang's liver cancer by Jeong Sang, not Poong Sang himself. And Jin Sang tells about the hardship he had to go through because of Poong Sang.