On 'Yoo Hee Yeol's Sketchbook', Davichi discussed how they've each been affected by the other member.

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Kang Min Kyung said, "When comparing now to nine years ago during my training period and when I first met my group member Hae Ri, the thing that changed the most was my singing ability... As I could not sing well when I debuted, I was buried under Lee Hae Ri's singing ability so just worked diligently, but eventually I became better at singing and being in tune after going along with Hae Ri's singing."

Hae Ri revealed, "Ordinarily, I can't drink alcohol, but because of Kang Min Kyung, I started drinking six months ago and got to know the taste of alcohol a bit." Kang Min Kyung added, "I am happy that I can now drink beer with Lee Hae Ri after our performances."