Singers Minseo and Paul Kim are set to collaborate for the duet track "2cm".

On January 22, Mystic Entertainment revealed, "Paul Kim will be featuring in the last track on Minseo's debut album 'The Diary of Youth' titled '2cm'." "2cm" is described as a track about moving straight forward after falling in love, and it was composed by GDLO and written by Kim Eana.

Minseo and Paul Kim's duet song will be out on January 29 KST.