Y/n are born with powers and its too dangerous for her to let her out. Her parents doesn't know how or why she have a such powers for the world too live in peace and so her parents decide too lock her up in a machine that freeze her body and let her sleep forever.
After she got froze up, her parent are having seven sons and they are just a normal beings to which is big relief to both of them. Their parent keeping their older sister as secret from them and never told them about her.
But unfortunately with the youngest mischief the secret are has been revealed as they found a little girl body inside a mysterious machine full of ice surrounded her.
What happened next is for me to think about...ಥ_ಥ