My name is Lupus, I've never had parents or any sort of family, besides my grandparents. The earliest memories I have are of waking up in a forest by myself.
As soon as I was born I was already well developed despite being an infant, how? I don't know and I don't care.
After a couple of days of loneliness in the forest I was picked up by a pair of elderly.
The old woman was sweet and caring, she helped me a lot especially with learning basic etiquette and basic skills.
The old man on the other hand was rather tough, though I could see his love clearly, as soon as I reached age 6 he started teaching me about the way of the battling.
After years spent with them I learned that my gramps was actually a soldier in a war quite a while back.
He absolutely despised the people who used the way of the sword or the way of the spear.
"That's all meaningless, everything has a weakness, if you can't counter then your only hope is with skill or pure unadulterated power which is always good to have, but you know what would be better, skill, power, and a perfect counterattack. The way of battle encompasses all weapons and martial arts!" I took his words to heart and trained as taught.
At age 7, a year after I began training something appeared in front of me, a "system" it called itself.
[Hello Lupus, I am the Unknown Hero System]
"What is this??? I'm going to ask gramps." I said and was about to take off before being interrupted by the system.
[By telling anyone the existence of the system, the user, you, will die immediately!]
"What die? Why!"
[Because the host must complete his mission of helping the hero with his missions. If the host is successful the host can save up enough UHP (Unknown Hero Points) and change the system to your liking, no matter what it may be.]
…
Needless to say, as a seven year old I did not understand much of what happened but I knew for certain that I could not tell anybody about the thing called a "system."
From then on the system was silent and only ever opened up when I said "System Store":
[Store
UHP: 0
Battle Tier: 8
Skills (Max): Way of Battle]
This was it said once I reached 11. I was very talented and was able to master the Way of Battle which is very good and I trained a lot raising my battle rank.
Top-tier battle ranks are usually around 20-35, as a eleven year old I was doing great!
I fantasized about being a well-known hero, someone respected, but all fantasies stopped after:
[Goal: Help the hero along his mission without being noticed, as you do better the more UHP will be rewarded, after 50,000 the system can be changed however the host wants granting freedom and power!]
So there I went, I slayed the dragon that would destroyed a continent when the hero couldn't, I saved the princess when the hero was occupied, I killed the hero's enemies when he failed to do so, but no, I didn't, he did, at least that's what I had to make it look like.
For multiple years I lived this life until finally I got the points required!
Immediately I used it and adjusted my system as I wished, the most important change I made was the change of making me the master of the system, no matter what I would not be forced to do something I did not want to!
Besides that everything was the same but instead I got points for doing what I wanted and doing things for myself!
However my happiness was shortly lived, somehow I guess my changes killed the god, at least according to the system, which caused a space-time disturbance which sent me all the way back into my 17 year old body.
At that time the hero was still just a academy student and I was a student with him, secretly watching over him, however now I would no longer do that!
I would do what I want with my [Master System]!