I only understood that mid chapter, like when m in the flash back and wondering what's going on, that's when i realize it's a flash back, which for me was confusing, maybe if it could be more clear like "hey we gonna have a flashback here", some manhwas do it by making the background black or with a different color or anounce it in a way that goes with the flow of the story, felt like these ones just were in the middle of the story with no context to why we are going back

The story is good but m so lost, I can't tell when is the past when is the present, one chapter they are lovey dovey and the next they are friends? Hlp what's happening