The Fusion Hero of Doomsday

In 2099, the end came. An 18-year-old boy was scratched by a zombie while trying to save his mother. By chance, he merged with the system and transformed into a wealthy man! But the mother also died at the hands of zombies. See how he beats up zombies, mutated beasts, and how he lives a new life in the apocalypse. The protagonist can gain experience and upgrade by killing zombies and mutant beasts, and can also exchange equipment in the system through corpse cores! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.