I thought it was pretty straightforward from the first chapter.
At the first chapter was wondering what exactly is he doing everyday? How does he pay his phone bill, he has a smartphone right? Is he a sex worker?
4-5 or more chapters in, I've commented before saying "He's basically jumping from one guy's house to another, I don't even remember if he has a job."
"It's been years playing cute, flirting... living off men's good graces"... "finding another sucker to let me crash in". And it explained all his difficult upbringing. I mean, it was straightforward for me.
Took me more than 10 chapters to realize Seoha is a broke a$$ moocher. And he's using his a$$ to get by life. Sex ain't everything