The official English release is usually available on Webtoon (LINE Webtoon) . This will have the highest quality translation and image resolution (crisp digital pages, not "raw paper" scans).
If "proper paper" refers to a specific chapter, a different title, or you are looking for raw (Korean) sources for translation purposes, please clarify error detected raw manhua
If your query is about an actual (e.g., "Error detected") while trying to view raw chapters on various hosting sites: The official English release is usually available on