Kahi spoke up about the time when she used to be BoA's back up dancer and the creation of After School on the May 6 episode of Mnet's 'Beatles Code 3D'.

On the show, past photos of her as BoA's back up dancer were revealed.  Kahi responded with some signs of embarrassment, "I think I was about 23-years-old.  I was ugly."

She said, "I became known as 'BoA's dancer' while standing on stage with BoA.  While BoA was preparing for her 'Valenti' stage, the Japanese dancers were showing the Korean dancers the moves, but one Korean dancer was lacking; hence, they told me to come and help with the practice because they needed more people.  I ended up working with BoA for three years."

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Moving on to the subject of After School, MC Shin Dong Yup said, "I heard that you and your CEO worked really hard together to create After School."

She said, "While I was promoting in [previous group] S-Blush, Bekah was a trainee. Bekah was so sexy that the CEO strongly recommended her and brought her from Hawaii. Afterwards, we were introduced to and chose Jung Ah.  Then we gathered Jooyeon and So Young for five (members)."

Shin Dong Yup asked, "Were you so affectionate that you made them assemble in the bathroom for important meetings?"  Kahi replied, "No.  Rather, I'm the type who says what I need to right then before going to the bathroom to think, 'Was I too harsh?' and cry."