Primordial Cultivator - Chapter 328 - Exchange

An alien race invaded the Earth on June 6, 2128. At the midst of this war, many nations allied with the alien threat and the war nearly wiped out the rebelling humans of the planet. At the edge of mankind's survival, the United Nations Army launched its forces to eliminate the immediate stellar threats that loomed over Earth.

General Seeker Carlean, commander and leader of the mission, risked and gave his life to destroy the immediate stellar threat. The battle was won though Earth lay in ruins. Perhaps mankind will live to see a few years of peace before the alien threat returns to wipe out their existence.

At the immediate aftermath of the stellar battle, the fallen Seeker Carlean awakens and finds himself at aged 17, living the peaceful life he lived 16 years before he died.

So begins a new game in the battle for humanity's survival.

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates

R18 ( No One 17 and Under Admitted )On one night, a boy named Ezra is abandoned on road by his father. Aeri, a kind-hearted college student, takes him in and raises him as her own. As years pass, Ezra grows more manly with time and is now deeply in love with the woman he calls “Mom.”To support Aeri, Ezra takes a job at the most famous brothel in town—a vibrant and lively establishment where beauty, desire, and drama intertwine. Working as a host and a male escort, he finds himself entangled in heated encounters, passionate affairs, and thrilling action as he navigates the challenges of the trade without letting Aeri ever knowing about his secret work.Ezra’s journey is filled with unexpected twists, romance, and adventure.

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?