Suddenly remembered that I saw storyboard leaks posted on Baidu last month (I believe someone posted one on the general thread here a while ago as well). I ignored them back then thinking they were fake, but...
What does that last panel on the last page say? "Bad End"? Kinda looks more like "Bird End". (The other pages might be nice for the general anime thread, but I want to discuss that last panel, it's suspicious.)