DUI is confusing and cumbersome also it's really hard to keep track of what what you have read and haven't read for instance I read a comic book up until I think 59th chapter and I recently started reading it again and I forgot I had gotten to the 59th chapter and it made me start from the beginning which is very annoying especially if you don't have money because unlike webtoon they really, really, really push for you to spend money which is annoying