
Oooop it reminds me of another famous BL I’m reading, but I like this one better!!

http://www.mangago.zone/read-manga/no_love_zone/ this one!! The plot is very similar!

Why the heck does suha keep calling jiwoon “Sir”

You’re right, but you do that knowing it’s part of the play, you are in confidence with that person you just like thinking they are superior to you. In this case it’s just suha trying to distance himself from jiwoon I guess... like they should be lovers, know each other and be confidential, informal, y’know? it just makes me sad :(

im so sad, ive been following this manhwa right form the start, i bought chapters and i really like it. But i can't follow the plot very well i swear to god i tried hard, I re-read it multiple times, and I learnt the characters name by memory but still there are things that i seemingly dont get well :( so frustrating...

There's a family tree that's given after the first chapter telling how Ennead appeared.
Look at the tree, I recommend you screenshot it. Then re-read the tale of Ennead's appearance while looking at the tree when needed.
Once you understand who's who you should be okay since the rest of the story is clear
i really can’t figure out why yeonwoo is behaving like this...
from what i can understand the only problem there is, is that Yeonwoo thinks keith wants him only for his body and he feels used like a toy, while Yeonwoo loves Keith. Why the heck doesn’t he just speak up about this issue like a normal adult would... like alright, he may think Keith wouldn’t understand, but now he is going too far imo