It's no question that After School's sub-unit Orange Caramel has achieved success with their unique group concept, but the girls revealed that they took a risk in joining the group because of the chance of becoming a big failure.

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During a recent filming of 'M! Countdown's 'Girls, Girls, Girls' special, Orange Caramel were asked the question that has always been on fans' minds, "Your group color is very unique so did you sense that it would be a success from the start?"

Lizzy shared, "To be honest, we thought it would be either a 'success or flop.' Either we release one album and quietly wrap up our [sub-unit] promotions or a lot of people like it. We thought there will be those who either love it or hate it."

Raina also opened up about her hardship, "Although it was emotionally difficult to adjust to the [concept], now I am working harder than anyone else." Nana also shared that it's a relief that she took part in Orange Caramel, "I think it was good that we did it."