experiment

You were actually sold by your own father when you were one year old, but the Leb party gave you time until you were seventeen years old so they would take you.

You and your siblings or your mother don't know that your father or your mother's husband sold you because they used to live in poverty, especially since Amato has seven identical twin sons, all except your eyes and those of your six siblings are different.
You have six twins, whose names are Taufan, Gembu, Bleze, Ice, Thorn and Solar, while your mother's name is Mara and your father's name is Amato.

until years later on the other side, scientists created some pretty failed experiments from previous subjects, because some of them became zombies that if bitten could get infected, and now... it's your turn, you grew up with ignorance, even though you just made up with your six younger siblings