What are mirrored characters? Which common ones exist?


I came across [this
post](https://twitter.com/gyankotsu/status/1371666634981662723?s=10) on
Twitter:

> ぎゃんこ  
>  @gyankotsu  
>  mirrored 死 from tokyo ghoul:re
>
> [![enter image description
> here](https://i.stack.imgur.com/98Erc.jpg)](https://i.stack.imgur.com/98Erc.jpg)

I don't really understand what `mirrored 死` refers to, and from the picture
I'm still quite confused.

What are mirrored characters? Which common ones exist?




That large character next to オッガイ is a fictional "kanji" invented by the
author of Tokyo Ghoul to write オッガイ in one character. It makes absolutely no
sense outside the work. You cannot type this character using your PC or
smartphone. Technically, it's a
[_gaiji_](https://en.wikipedia.org/wiki/Kanji#Gaiji).

Obviously it was made by "mirroring" the left part of 死 ("death"), but it's
not a common convention at all. In this information age, the invention of
totally new fictional kanji is not common at all in the first place. This is
nothing more than his unique wordplay on kanji.




That large character next to オッガイ is a fictional "kanji" invented by the
author of Tokyo Ghoul to write オッガイ in one character. It makes absolutely no
sense outside the work. You cannot type this character using your PC or
smartphone. Technically, it's a
[_gaiji_](https://en.wikipedia.org/wiki/Kanji#Gaiji).

Obviously it was made by "mirroring" the left part of 死 ("death"), but it's
not a common convention at all. In this information age, the invention of
totally new fictional kanji is not common at all in the first place. This is
nothing more than his unique wordplay on kanji.

