On January 10, Oh My Girl guested on SBS Love FM's 'Kim Chang Yeol's Old School'. Meanwhile, the girls recently topped music charts with their title track "Secret Garden", and also achieved their first #1 on music charts with the new hit. 

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Regarding their comeback in 9 months with "Secret Garden", Seunghee commented, "I was worried a lot because it was our comeback in a while. I was also worried that we might've been forgotten and that fans might become tired of waiting."

On their success on music charts, Oh My Girl stated, "It was totally unexpected. We screamed after looking at the chart. We checked over and over again because we thought it was a joke. We thought the whole nation was scamming us. It felt like a lie."