I'm a Villainess, Can I Die? - Chapter 19

Upon awakening in a parallel world, Lin Yi discovered that not only were Xiao Zhuang and Xiao Ying present, but also veterans like Old Pao, Tou Lao Gao, Qiangzi…He had unlocked an Entry Upgrade System.【Shooting Novice (White) → Hundred Paces Piercing Yang (Gold)】【Superior Memory (Blue) → Photographic Recall (Gold)】【Master of Struggles (Blue) → Supreme Titan of Competition (Gold)】【Martial Arts Grandmaster (Purple) → Mortal Warlord (Red)】【……】As time passed, Lin Yi steadily advanced towards the peak, growing ever stronger.Yet, as he ascended, unexpected figures began to emerge before him—He Chenguang, Xu Sanduo, Lei Zhan, Yan Poyue, An Ran, Long Xiaoyun, Shen Ge…Only then did Lin Yi realise that this was not merely the world of Special One, but a vast amalgamation of multiple special forces universes.

A Consort seeks prosperity.A Shepherd cloaked in yellow wages war.A Prosthesis-wielder cries out for retribution.Shadows tremble in the depths, encompassed worlds obscuring the many dangerous secrets of history. Might they be unraveled, all ways of life would be threatened. But to climb higher requires risks, to seek the light requires a Gambit of Lifetimes.Only when one determines themselves capable of risking it all, can all prosper.

The dawn era after the end of the half century has gradually rebuilt the order, abandoned civilization, and is full of undivided violence and desire.
The noble and powerful pioneers are in charge of the city, and the evil and mad plagues are in the wilderness.
Pure human beings who cannot mutate are the weakest, dominated by the rulers of the pioneers, and are not as good as animals in the wilderness.
A purely humanized young man with a worldly experience has quietly entered the WTO, holding a three-foot long knife and a long-distance desire to boil in the world of purgatory. From the nameless name to the sorrow of the Supreme Court, the name of the black ride is resounding!

- Description from Uukanshu (translated)

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!