Jo In Sung's unconditional love for Song Hye Kyo has been revealed.

In the 9th episode of the drama "That Winter, The Wind Blows" that aired March 7, Oh Soo (Jo In Sung) begs Jo Moo Cheol (Kim Tae Woo) for Oh Young (Song Hye Kyo).

Oh Soo tells Jo Moo Cheol, "My fake little sister Oh Young was diagnosed with a brain cancer when she was young but recently she's been really sick. I'll pay the money I owe you but can you please let Sung Hee see Oh Young."

However, Jo Moo Cheol replies, "The time we promised is nearing. Just use the medicine. Are you really dating your fake sister? You're risking your life to date? What a show."

The medicine Oh Soo received from Jo Moo Cheol was long gone when he threw it out. He decided to save Oh Young's life but if he doesn't kill her, he will probably be killed.

Oh Soo says, "I'll find a way to pay you the money. But let's let this innocent girl live. Can you please convince Sung Hee please?"

Jo Moo Cheol replies, "I saw you like this once before. When you said you love Hee Joo. 28 days later, we'll see if all you're thinking about is this girl or not, just like how it was with Hee Joo" and leaves.

Meanwhile, Oh Young learns that the medicine Oh Soo gave her is animal euthanasia medicine as well as the fact that Oh Soo was trying to rob her safe.