The last teenagers on Earth and a full blade. Brailler M.

Having survived the first winter after the monster-apocalypse, Jack Sullivan suddenly finds out that his favorite weapon has gained strange and unexpected power. The trouble is that after the upgrade the Rezak does not obey the owner. Meanwhile, a long -standing enemy, whom the last teenagers on earth considered defeated, only doubled forces. Now Jack is simply obliged to master new abilities - otherwise the world (again) is the end!