I would like to recommend you to read some of the stories from xoxonew . I really like their works .

here : https://www.asianfanfics.com/profile/view_author_stories/1202287/L

The straight Guys : https://www.asianfanfics.com/story/view/1177710/the-straight-guys-angst-drama-exo-kai-forbiddenlove-kyungsoo-kaisoo

And

Tale : https://www.asianfanfics.com/story/view/1175863/the--tale-pwp-kai-kyungsoo-kaisoo

these are really good ,, and i hope that you'll enjoy these fics . Thanks and please leave a comment on the fics , it will really encourage the authors