What's interesting is that you might start a Burning Wheel game with a character presented similarly - drama-laden backstory, vengeful inclinations, loyal to a leader who is young given her role. (I'm just trying to capture the highlights of what I got looking through your sheets.)I'm about to get a chance to play L5R 5e as a player soon. I have attached both my character sheet and the 20 questions worksheet where we nail down detailed information on who the character is. There's a strong emphasis during character creation on establishing relationships to the setting. Note how roughly 5 new NPCs come out of the character creation process. This is the sort of writeup I consider somewhat suitable for character exploration oriented play in trad game.
But I'm guessing that the expectation as to what will be done with them, in play, is different! For instance, in the exploration game I'd expect the GM to make decisions for the NPCs that might put the player (via their PC) under pressure (eg "Go and kill this person for me!") where those aren't related to a pass/fail or hard/soft move cycle driven by the player's own action declarations.