My O/C

What if Korosensei wasn't the first one to be experimented with tentacles,Hirisawa Izaya,the original experiment.When she was only 7,her parents were killed by assasins.Irina found her and took her in.A year later,she was saved by Shiro to become the next test subject.The scientists then implanted the tentacles behind her neck.It hurted but she was able to handle it cause before all this,she felt more pain.The tentacles asked her what she wanted,she replied"There is nothing I want that you could give me."Shiro took care of her and treated her nicely while also revealing his identity to her.Then she met Itona,she was able to trust him.But what about E Class,will she be able to trust them,or will she keep her heart locked up?