ほんらい本来honrai
1.
The inherent characteristic or role that something possesses by its very nature, indicating what is expected or normally should be the case.
2.
A reflection on the original state or essence of someone or something, often suggesting a return to that state.
3.
The normative principle that something ought to be as it inherently is, typically accompanied by expressions of duty, obligation, or prohibition.
Example:
この詩は本来フランス語で書かれていた。