Siyeon is not shy, she's simply following her rules to hide in the background of life in general. Or at least she's doing her best to be 'at the fardest end of the social spectrum'.

Strictly reserved to her own things that vary from music to... pretty much anything related to that, Siyeon lives the normal life of a high school student who doesn't wish to engage in deep conversations with no one. Not even her family even though occasionally she has to.

One day around the middle of the school year, she coincidentally is asked by a new beautiful girl the simple favor of helping her find the exit of the school building. Of course, you could expect her to try to avoid her, wouldn't you?