Second Chance Reincarnation

I lived in poverty with my little sister, robbing and pick-pocketing people just for us to get by.
But in a turn of events, we get robbed and died by gunshot.
I got reincarnated into some magic world with an annoyance in my head.
An egotistical, self-absorbed chuunibyou of a Goddess living rent-free in my mind.
I am on a mission to search for my sister and answers in this New World.
But will I be able to do that without making enemies along the way?
Abandon your horrible upbringing, embrace change and protect what you love.
I am Polyphormes Raijin, The Magus Archer of The Raijins.
And this is my second chance at life.