I’m Checking In Like Crazy in the World of One Piece

An office worker who had worked himself to the bone at his desk in his previous life transmigrates to the world of One Piece.

From the start, he's a menial laborer. The Marines are going to suppress a gang of bandits, and it looks like he'll be going down with the cannon fodder ship.

In this desperate situation, the [All-Purpose Check-In System] awakens.

I'm overjoyed: At last, I can defy fate, punch the Four Emperors, and kick the Admirals?

But the very first mission makes my eyes go dark: [Check in at the gate of Morgan's Marine Base. Failure will cost you your remaining three days of life.]

???

Other people get divine weapons and Haki when they transmigrate. I get a death sentence?

Check in at a Marine Base? At Buggy's treasure vault? At CP9's lair on Enies Lobby?!

And during the Paramount War, it wants me to check in on the ruins of the Execution Platform?!

Looking at Whitebeard, Akainu, and the Three Admirals fighting for their lives around me... I cry.

This lousy System wants me to check in with my life!

To survive, I can only rely on my knowledge of the plot, dancing on the edge of a blade and recklessly courting death right under the noses of the powerhouses.

Luffy: "You're really fast!"

Zoro: "That guy's kind of interesting."

Robin: "Your actions always make me so curious."

Mihawk: "...An interesting bug."

As I complete one dangerous mission after another, the rewards keep pouring in: the Six Powers, Haki fragments, and even... Conqueror's Haki?!

Before I know it, I've gone from a menial worker scraping by to a "check-in seeker" capable of stirring up the world.

When the final mission arrives and I face Kaido, the Strongest Creature, I smile.

This time, I don't check in for the System or for my lifespan.

I just want to tell the world: This check-in spot targeted by an overachiever is mine for the taking today!