Her fault she can't take a hint imo because what did he do that require him to "beg for forgiveness" so badly. So weird so many people are commenting this. He doesn't need to apologise nor beg because disappearing from her life is not something he could undo nor control. His father is responsible for that. And the brown haired dude failed to relay his final message. Keep in mind both are human beings and neither of them have to grovel nor "beg" unless they murdered someone.
Its a manhwa anything could happen.. when I wrote this comment I thought he was going to kiss her and play with her. And of course I wouldn’t expect him to literally beg you’re right in saying he doesn’t need to I’m a bit surprised how literally you took my comment. I was just hypothesising if he did hurt her feelings badly a redemption arc would be expected hence the “beg”. I’m aware of all of this but he could at least owe her an explanation anyway, sure his last message wasn’t relayed but now that he knows stuff he could at least tell her something, anything to stop her curiosity and let her let go in peace. It’s hard to let go of your first love when you were so close.
But im kind of a mean person and I want her to get back at him for ignoring her bcs I feel like his kiss is too unrealistic and he’s gonna hurt her feelings, I want him to beg no matter how hot he may be :D