It was fun! Sorry if that wasn't coming through. Your games basically always display a good sense for fun danmaku and I've come to expect solid (but a bit janky) STGs from you, to the point that I even forgot to mention that I had fun in my comment. Really sorry about that. I'll say it once again clearly: the game is fun!
Regarding Tewi's second spell: I just replayed the game and I can see how being higher up helps. I think the balls just come out a bit fast for it too feel comfortable to be that close to the boss, but in hindsight, it's probably preferable to deal with that rather than the walls further down the screen.
Thank you for the game, and thank you for the detailed reply.