I was wondering where Featherly Hills was...

I realized it when I saw the English notation in a YouTube guide... Is it because of the timing of the linkage? After clearing stage 15 again, I successfully got 50 points. So it was okay with stage 35... I cleared up to stage 64 looking for Featherly Hills... As a strategy for up to stage 35, the enemy's formation changes with each retry, so you can manage by trying multiple times. Also, you can get items from treasure chests that appear every 30 minutes, daily missions, and by watching video ads. There are also level-up items in the achievements tab in the middle of the screen where you go to the linkage screen, so I think you can clear it within the deadline. As for the game itself, I don't think the system is bad, but the design is too explicit and doesn't suit me, so I'm quitting. When playing with sound on, the straining sound of the bird laying white eggs was so vivid that I wondered if it was targeted at that demographic?