I think it’s because they are minors now
We will get some action on season 2 maybe
because shounen ai usually doesn't involve any overly sexual content such as intercourse and such, fyi, author has stated that the story between Byul and Siwoo is for all-ages (?), meaning it has no seggs scene :D
Like the reply above said this story was always going to be shounen-ai from the start, mangago just happened to put the wrong tags initially.
(besides this is an illegal site so the tags aren't always gonna be reliable)
(⊙…⊙ )
No way…. My eyes must be wrong
No matter how i rub my eyes…. That tag still there
Or this is some kinda mistake…. Hahahaa
WHY ITS SHOUNEN AI???