Marshmallow is one of IU’s more cutesy songs. It doesn’t show off her vocals as much as other songs, but I like it anyway. The marshmallow man is so cute 
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Credit: source vid. Makro@jpopsuki
I downloaded a performance of this song when it was new and was about to post it back then, but it didn’t stick with me (kind of like with KARA’s Wanna), so I didn’t start listening to IU at that time.