Just finished it but what was the ending?

Let me start by saying that I really loved every part of the manhwa and the art was great but WTH was the ending??? I know the author/illustrator changed the manwha from the light novel to favor romantica more than adjest but why would he get cold feet AFTER he already changed it and lead everyone think he’d choose romantica??? There was no point in changing it in the first place because of that open ending that doesn’t really bring the story to a close. Am I wrong to think that?