Best thumbnail ever XD.
Taking down planes was the best part, boss fight was ok until I figured out the laser was too useless, the other weapons were the right choice to take and the firing system was intuitive.
I must suppose Sakuya is in those planes because of her danmaku xD, the only confusing mission was the first one because the shrine isn't that visible, but all of them were good.
The way the plane flights is just so epic, maybe a more epic audio for the final boss would be great but an amazing job overall.