I think some of the reasons people find her "annoying" have a lot to due with the simple fact she's not swooning over him instantly, they expect her to reciprocate because the male lead wants her. they want her to stop making everything so difficult for HIM. give him what he wants. be the demure, shy and easily embarrassed herione they are used too reading about in these romances and be "won" over. I myself no issues with her character, i actually find aruem to be a quite refreshing female lead but to each their own I guess
Areum is........annoying ┑( ̄Д  ̄)┍
Well no offense to those who like her character development.(●'◡'●)ノ