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Orpheus2020
The last panel of this chapter on the author's Twitter does say おわり which means 'End'. What G-P added was the "(?)" after "The End".
FYI everyone, unless you can communicate in Japanese, even if it is broken, please do not pester the author since they are most likely working on multiple projects, and they are very likely to not be fluent in any language other than Japanese, so bugging the author about this would only stress them out, especially if it is in a language they don't understand since they would feel obligated to respond. Your consideration would be much appreciated.