I personally never recommend Made in Abyss without a strong disclaimer. Don't mind the torture and gore, but the pedo stuff is just too much to bare. Apart from that it's a pure masterpiece (characters, story, art, soundtrack).
It's more poetic with short independent stories, but a great anime indeed.
GnuPG is one of those tools I never got around to use. How could something designed for human communication be so utterly cumbersome and confusing ?