This story is a translated version from Vietnamese so there might be a lot of grammatical mistakes. Because it takes time to translate the story so the original will always be posted before the English version. You can find the original version at: https://taeyonghater.wordpress.com/2017/03/01/nhung-ke-co-doc-yunhotaeyong/ I only post this story at my WP, AO3 and AFF.