A Moment to Cherish(kuroko no basket x OC)

Rumors were said that there was a sixth player in GoM, but what about the seventh. A person said to be better than all of them combined. A person said to be undefeated. But what happens when she comes back again after leaving her team. But this time she joins the seirin basketball team.
What will happen when they realize what power that they now hold when she joins their team? Will she be able to grab the attention of her old teammates? It all matters on what tricks are up her sleeve.