So i want to make bot of FGO characters / Nasuverse. But i dont know shit about the lore (only watched Fate Zero)

I really like some of the characters and wants to give them their base personality and stuff in a regular setting (non fantasy), maybe kinda OC..
Meaning it doesnt have any relation to the Fate universe or just Alternate Universe.

But being the dumbass i am that suffer from perfectionism, i feel the need to learn about all the world building/rules/story overnight, just to not use it in my bot.

So what do you think?

Also i kinda want to add an extra touch to the settings, like medieval or under 19 centuries just because i dislike modern setting, but please add your suggestion

tags: FGO, fate grand order, suggestions, blue archive, medieval, alternate universe, AU, saber, nightingale, raiko, florence, artoria, xuanzang, rin, minamoto, mashu, jalter, morgan

Edit 1: now i know the main lore/universe work, still i didnt watch the shows/play the game to know each lost belts/events

Edit 2: i regret learning even more