In fact, I am a little angry when I see the following. I am not belittling you or anime, but most people mix masterpieces with classics. Many of them are classics, not masterpieces, Gundam, Death or something is a commercial masterpiece. There is a gap between masterpieces and classics.
1. EVA is recognized as a masterpiece, an eternal classic, and has profound connotations. Only such animation can be called a masterpiece.
2. Sora no Kyoukai is an anime that I like very much. It is also a masterpiece. The world view is very profound and a bit difficult to understand. But the more I watch it, the more I like it. The last one was released last year.
3. There seems to be another one of Key's three love movies, and I think the latest one is out. I didn't like the tone, so I didn't watch it.
I wrote it sincerely, and it is definitely not a copy, but it is definitely a masterpiece
4. The Headless Horseman Mystery Chronicles released last year, I think can be called a masterpiece, but it hasn’t been recognized yet.
But the masterpiece of the healing system is probably the Insect Master.