Action, Adventure, Shounen, Tragedy
- While Alex is heading home to his sister Ellie, he sees a person being killed by a monster
- A girl with bionic legs defeats it, and asks him to kill himself due to having the mark of the Six
- After learning that he can still save his sister, he joins the fight against the monsters
Alex and Ellie are orphans who are making ends meet with a repair business, however, monsters begin to appear.
Where to read
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