Actors Jo In Sung and Song Hye Kyo have a new nickname.

The actors who a recurrently starring the SBS drama “That Winter, The Wind Blows,” are receiving a lot of attention and love from viewers for their intense relationship.

Due to their popularity, viewers decided to nickname them, the “O₂Couple.” Their nickname was chosen because both of their names starts with “Oh” and because their performance is refreshing like oxygen.

In the drama, they play complex characters that have had a rough childhood, therefore they are strong-willed and hopeless. Jo In Sung is Oh Soo, a man who is a con artist who is acting as Oh Young's late brother to pay for his big debt. Song Hye Kyo plays Oh Young, a blind heiress who is very strong and distrustful with the people around her, who want her money.

“That Winter, The Wind Blows,” airs every Wednesday and Thursday on SBS at 9:55 PM (KST).