Once Human, Now a Parasite - Chapter 723 - 667: The Head of Military Intelligence

In childhood, they were neighbors. Xie Zhen always bullied Li Yu.

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

I, an ordinary high school student, Kimizuka Kimihiko, who easily gets involved in things, was appointed to take care of mysterious attache cases by mysterious men in black suits. After meeting a beautiful angel-like detective girl, named Siesta in a hijacked plane, I became her assistant.

And from there–

[You deal with the beehive, and I’ll restrain the enemy.] [Don’t make plans that make me the victim.]

We had those kinds of foolish conversations, all while being completely broke every day and fought against . Even when there were hurricanes, the weather-beaten duo sleep past it. Sometimes when we saved money at a casino, we would jump around on the beds at a resort hotel, only to be broke again the next day. We would walk through deserts, traverse through jungles, conquer mountains, cross oceans– The great detective and her assistant would go through these dazzling adventures–

Until she died.

And this story starts from 1 year after that incident.

I’m the only one who’s left, but I carry on her remained wishes.

This story is far from over..

Earth was supposed to be a safe haven.And for a time—it was.Until one night, golden stars lit up the sky like cosmic flames. The heavens swirled, the winds howled, and the world braced for its end. But just as quickly as it came... the phenomenon vanished.Weeks later, everything changed.Humans began to awaken powers once thought to exist only in fantasy. Skills—mystical, world-shaking abilities. Some used them for good. Others unleashed devastation.What could a gun do against a man who could turn into a living bomb?Portals tore through the sky, connecting Earth to monstrous realms. Beasts, demons, and nightmares poured into the world. Amid the chaos, powerful humans rose to fight back—and won. The survivors called them one thing: Heroes.Among them, one boy was left behind.Han Trystan—orphaned during the Sendok Calamity—carries the burden of rebuilding his parents' legacy, protecting his three younger siblings, and finding a cure for his dying aunt. But all of that hinges on one thing: awakening a powerful Skill.And when his time finally comes…> Name: Han TrystanSkill: Book FormationRank: EThe lowest rank. A joke. Practically powerless. Hope? Shattered.Until Han discovers the truth.His skill isn’t “Book Formation.” It’s something far greater.Creation. Not just of weapons or armors. But artifacts, pills, barriers—even other Skills.The world labeled him weak. But he was never meant to follow their system—he was meant to break it.Years later…> “Did I see that right...?”“Yeah. He just wiped out hundreds S-Rank monsters—alone.”“So the title ‘White-Black-Haired Monster’... it wasn’t exaggerated after all.”In a field of fallen beasts, one man stands untouched. Eyes calm. Power immeasurable.> “Weaklings.” Han mutters.Follow Han Trystan’s journey from the lowest-ranked misfit to one of the most powerful beings in the multiverse—and witness the rise of a legend the system tried to erase.