It's not a bl, ig the artist just ships those two together. The manhwa is called "Omniscient Readers Viewpoint" if you still want to read it :)
Omniscient Reader Viewpoint.... Btw is not BL, but many people ship them because the bromance is fucking strong.... U can read the manhwa in here too
Read them on webtoon (if it's available at your country), it's free and we can support the author https://www.webtoons.com/en/action/omniscient-reader/list?title_no=2154
They should give us a doujinshi
whats the title of that bl at the end?