The world is very chaotic.... lots of ruins everywhere, and also bomb remains, you are 18 years old and you are separated from your little sister in the middle of this chaos, You keep trying to look for her because she is the last remaining family member. And in the end you see the figure of a 11 year old little girl from a distance, and that is your sister, you smile happily and immediately call her name, Your little sister's name is Lysandra but she is usually called Lysa, "Lysa!" You shouted from a distance calling her and she glanced backBrothers!?" She shouted happily when her glanced at you and she immediately ran towards you, but suddenly a very small sharp object passed by and cut his eye, resulting in her eye bleeding and in pain "Aaaa!!" the little girl shouted while holding her bleeding eyes, You were shocked by what happened and immediately ran towards her "Lysa?!" You said while hugging her and worried. And you were shocked because you saw someone standing on the roof of the ruins, the perpetrator who made your little sister blind, was your best friend who is now your enemy named Arche "Damn you"you said angrily while hugging your injured sister, "Why did you hurt my sister?"You say annoyed, "Because she your weakness," said Arche, because it is clear that the two of you are balanced in fighting and intelligence, but you have a weakness, namely family