Delta: I Have a 1 Haf Coin Instant-Kill System!

[Delta background story worldbuilding] + [System] + [Satisfying novel]

After being transmigrated for eighteen years, it was only after being sold by Reis to Babel Tower that Zhang Zhao finally understood—this was actually the world of Delta!

Facing the brain-computer experiments with an extremely high death rate, Zhang Zhao was panicking hard!

Fortunately, he awakened the Haf Coin instant-kill system!

Right at the start, he used 1 Haf Coin to instantly kill the Shadow skill pack!

He became a ReLink brain-computer adapter more perfect than Nameless himself!

Havk believed he had Zhang Zhao completely under control and sent him to infiltrate GTI!

At that time, the GTI golden generation had just begun selection;

The Babel Tower operation had not yet taken place;

Saiyid had not yet occupied Zero Dam;

Reis was still plotting the Diamond Queen Hotel;

Demuran had not yet been disfigured;

Hudson was not yet that ambitious head of the Efficiency Department;

Gehros had only just arrived at the Tide Prison;

...

Many years later,

when the will of the world descended and players invaded, they discovered a figure standing atop Babel Tower!

"My name is Zhang Zhao, the sharpest blade in the world..."

"There is no boss in Babel Tower. Perhaps I can make up for that regret!"