Post History
FWIW: At the end of the story/book add an Appendix "History of the MYTO". There you can add all the detail you want. If a reader uses it, fine. If they feel they don't need it, fine also. This ...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/45800 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
FWIW: At the end of the story/book add an Appendix "History of the MYTO". There you can add all the detail you want. If a reader uses it, fine. If they feel they don't need it, fine also. This has the benefit of mentioning past history that can become other stories (you will have laid the groundwork for them in the "History" piece).