What made OkJoo depressed was her battle with her previous company. They weren't paying her and basically forced her out and took her stage name (E.via) and all her music away from her. In the words of OkJoo herself, when she threatened to leave they threw objects at her and cruelly made fun of her and her character. She was lost for a time and then Outsider offered her a place in his label (that man knows talent when he sees it). She hasn't made a proper comeback ever since, she only has released a couple of songs digitally, but one can she has still not completely recovered.
Jolly V loves to bring up her unfortunate situation every single time in her "disses", kicking her while she is down.