Marriage of the Di Daughter - Chapter 105.4

A seemingly ordinary training exercise led Chen Jian and his squad into a completely different time and space.In the post-apocalyptic world, monsters run rampant, and the surviving humans struggle to live under their terrifying claws.To fight the monsters, the living have abandoned everything.Human nature no longer exists; beastliness is the mainstream.To defeat them, one must first become them.-----------------Chen Jian was supposed to be like the others here, pursuing the maddening evolution.But, when the tungsten-core armor-piercing round first penetrated the Kui Niu's keratin armor, he suddenly discovered...Perhaps there is another way to stay alive?

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Liu Zilang had a well-kept secret — he was a prodigy in competitive FPS eSports. His specialty? CSGO. He even entered the finals in the prestigious world tournament.

Alas, his team fell short due to Liu Zilang’s inexperience. Shattered by the fact, Liu Zilang vanished from the eSports scene. That was until his friends got him to play a new game known as PUBG.

Liu Zilang’s life turned around and he began to make his comeback. Follow Liu Zilang as he encounters difficult situations, all while learning to open up as a person, but more importantly as a brother.

- Description from Novelupdates

One day I got a younger sister.Only I know her true identity.