Promise? Promise. (Exo Xiuhan/Lumin)

Kim Minseok, or Xiumin, isn't the most outgoing person you'll ever meet. He walks unnoticed past, a wallflower. Therefore, the second he enters the party in the house of his friend Suho, he knows he is out of place. But someone takes notice of him. A very special someone. And Minseok will never be quite the same ever again.