The All-Dere

Watch your back, if you can...

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In the realm of anime, every anime character knows each other : Ciel Phantomhive knows Yuno Giasai and Eren Yeager knows Blair (from soul eater) and Naruto knows Haruhi Fujioka and Yusuke Urameshi knows Gon Freecss and Monkey D. Luffy knows Ruby Rose and so on so forth.
Everyone in this realm knows they are just characters from anime especially the little ones, but then one day a girl appears at first glance some would have said she is bipolar but then she shows that she has some signs of being a dere.
Every single character has been taught how to deal with deres but she shows signs of all the deres her and her twin that shows up after two days she showed up and they soon find they are experiments that every dere type can be in one person.
Soon they are called the all deres and the characters do not wish to deal with them so they are sent else where with barely any memories. The one memory they share the most is them being sent away now they are out for revenge...