I Became Invincible Too Easily

In the underworld where secret and extremely dangerous forces and organizations operate, there is a legend of the most dangerous member of the black organization, who controls half of the world without anyone knowing. This mysterious figure is called Spyritus, but contrary to rumors, he was just a boy hiding an even more incredible secret. Read what will happen in his incredible life, and how he will become stronger. - [I do not own the rights to commonly used phrases and characters, except for the protagonist of the fanfiction.]