The Last Marine - Chapter 18: Two Soldiers, One Niece

System, “You have a sickness. Moreover, you’ll have one in every world.”

Hao Ritian, “…”

System, “What’s wrong? Is there a problem?”

Hao Ritian smiled, “No, there’s no problem. I was just a bit excited.”

System, “…”

That smile intensified the system’s feeling of ominous foreboding. It has had this premonition since it learned the name of its host. Now it only prays that this is all its imagination!

Ps: Protagonist shou 1v1, the gong is always the same person.

- Description from Novelupdates

A spin-off of the various works of Kamachi Kazuma. One day, Kamijou Touma (A Certain Magical Index) faced yet another misfortune. His toilet was broken and spraying water everywhere. As he was lamenting his misfortune, suddenly he appeared in a strange place along with Index and Misaka. Soon enough, more strange people begin appearing…

Includes:

A Certain Magical Index

Heavy Object

The Zashiki Warashi of Intellectual Village

The Circumstances Leading to Waltraute’s Marriage

A Simple Survey / A Simple Monitoring

Killer Princess and Deep End

When he woke up, Rono traveled to the world of pirates.

I thought I could live happily and peacefully.

But the appearance of Tianlong people broke this situation!

Rono, watching his parents being shot to death by Tianlong people!

Under extreme anger, Rono awakened the system and vowed to kill all the Tianlong people!

From then on, a [Extremely Evil One] who specialized in hunting Tianlong people was born!

Wherever Rono went, the Tianlong people shivered!

Admiral?

Two more and I will kill all of you rubbish!

Karp: The Evil One?

He is a monster created by the Tianlong people, and one day the Tianlong people will pay for it!

Roger: 【One Piece】?

Compared with [The Evil One], it’s nothing but a cloud!

Whitebeard: [The strongest man in the world]?

No, no, Rono is the strongest!

Rocks: In terms of killing Tianlong people, Rono is the first, I am second, everyone else is garbage!

- Description from novelbuddy

Eli Turner had perfected the art of coasting through life, gaming, lounging, and vibing with no grand ambitions beyond the next high. But his laid-back existence is upended when his laptop inexplicably transforms into a gateway to another world. What starts as a surreal escape becomes a perilous journey as Eli finds himself wielding a mysterious system that allows him to level up, fight monsters, and gain abilities beyond his wildest dreams.At first, the portal world feels like a haven, offering purpose and adventure Eli never knew he craved. Guided, or manipulated, by Azrael, a mischievous god orchestrating the game, Eli rises as one of the system's chosen players. But as the quests grow more dangerous and Azrael’s true intentions begin to surface, Eli struggles to balance the fantasy world with his life back home. His girlfriend, Sara, and his friends are left grappling with a version of Eli they hardly recognize, as the lines between his two lives blur.When the system expands to players worldwide, Eli crosses paths with others drawn into Azrael’s cosmic experiment: Yumi Tanaka, a fiercely disciplined Japanese student with a perfectionist streak, and Arjun Mehta, a charming Indian playboy with secrets of his own. Each carries their own burdens and ambitions, but all three must face the harsh truth: Azrael’s game is far more than it seems.As alliances are forged, rivalries ignite, and the stakes escalate, Eli must confront not only the dangers of the portal world but the growing rift between the person he is and the hero he’s becoming. In a game where every move is a test and every choice ripples across both worlds, the question remains: can Eli, Yumi, and Arjun uncover the truth before the system consumes them all?