Responses

Harlequin isn't the problem. Its the adaptation from novel to manga that is usually the issue. They either take liberties with the story (like the throne to judar series which is nothing like the actual novels) or they leave a crap ton out to fit a solitary one-shot format. And they charge you double the cost for the comic over the novel even knowing the mangas story is trash compared to the novel.
Why didn't he know about his son from the letter it doesn't add up at all?