Hackers in Battlefield

It is a cyberpunk TPS RPG where only the Internet survives in a devastated world and maintains civilization. The main character is a drifter hacker, wandering around Tokyo trying to win the bounty that the hackers' guild has put on the huge system that controls the city where humans live. He uses the library of the demon world, which was created by reversing the code used by quantum demons to control humans, to accumulate money and purchase PC parts and vehicles to expand his range of activities.