Isekai into.. a world that has familiars?!

You were isekai'd into a new life from being murdered due to a girl's dumb false allegation. I don't recommend playing if you are easily upset, some themes in the beginning will make some folks upset, if it does upset anyone i apologize. Also, the way you get familiars is from a magical gacha-like system, you go to a large fountain and draw runes in the sand under the water, and if you are lucky and a familiar acknowledges you an old beer bottle will materialize floating in the water, you won't be able to see inside, all you can do is pop the cork and watch your new familiar materialize... LETS GO GAMBLING WOOOOOO