(N)SFE stands for (Not) Safe For Exeos and describes if an anime/manga would be suitable for Exeos#6639 to watch or read.

I am very sensitive when it comes to character deaths in fiction, hence my effort of trying to avoid any kind of series with deaths of likeable characters who you get to know in more or less detail.

If a side character who is never really introduced any further dies, it's not that bad. If the character however has for example a bit of backstory shown and they are easy to relate to/like, that characters death would make a series NSFE.

Examples of (Not) Safe For Exeos -> Attack on Titan, Akame Ga Kill, Code Geass

Examples of SFE -> Fairy Tail, Love is War, Konosuba

A series is also NSFE if it has a sad ending. Sad and/or very emotional passages within the series are fine, as long as the ending is happy. A good example for this would be Kimi no Na wa.

(Not) Safe for Exeos by Davjac123 June 16, 2020

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not safe for waffles

A topping that simply isn't safe for waffles.

"You can't put the universe on a waffle, Joe. It's not safe for waffles."

not safe for waffles by thatonesexymotherfucker October 8, 2016

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not safe for life

Any video or image that depicts particularly graphic material such as a dog getting kicked or a disemboweled horse.

Hey, do you want see an image of a dead dog?

-Kevin
No, why would I want to see that? That’s not safe for life.
-Joe

not safe for life by wordbrodgg September 9, 2023