Well, the first thing that I asked the system to do was place Lyanna's soul in the body of now gender bent Rob Stark. She will live her new life like those Reborn souls in trashy VR games Novels. I basically gave her a new chance at life, without any commission and I think she will pay me back with her body.
Okay, let's start this new life already, from age 1-7:
I portrayed myself as a prodigy from a young age, I walked quickly, talked quickly and even spoke at the age of 18 months. To give surprise to the Starks and now reborn Lyanna, my first words were in Valyrian saying: "Your King has spoken". Well, no one understood it except Ned, Benjen and Lyanna(baby) and suffice to say both adults were surprised, and i am pretty sure Ned told Benjen the truth about my birth.
Well, I was very cute in my young years and the Maids were the same as I requested but still younger than their real counter parts, and I am pretty sure, they are in cahoots to control me, to make their own lives easier.
Well, anyway I displayed my talent when I picked a training sword at the age of four, me and Lyanna were supposed to only learn how to block. And yes, somehow Lyanna was able to convince Ned and he allowed her to take training lessons.
When I was handed the wooden sword, I felt that something changed within myself and I started to just dance, while I was dancing with my eyes closed, everyone was looking at me with strange and shocked expressions as this technique was very similar to Braavosi water dancers.
In short, all I did these even years was make everyone impressed with myself, consolidate myself as a known prodigy, learn fighting and impress the Weapon's master, Also I kept my relationship with Lyanna very good and I was able to claim her wolf's blood, Don't ask, I will explain all of this in the next chapter, also I will also start getting dominated by the maids.