Ken Takashi's family was murdered when he was outside with his friends. Ken was shocked when he found that his beloved family was brutally murdered. Ken's dad was a popular businessman. The news showed that the murders were done because of Rivalry in business or was it?
Ken's dad on his death bed gave him 5 strange artifacts and told him to keep them safe at any cost.
Filled with rage against the rivals Ken formed a secret undercover Alliance called Zero~ with 4 of his friends Haruki, Akira, Hideaki, Kiyoshi. The Un-Revealed suddenly began to gain popularity as more and more criminals were executed with every passing day.

"It's been 2 years since Ken died. Strange isn't it? " Haruki whispered to himself.