Toaru Majutsu no Index - Volume 16, Chapter 4: Who is Protected by Whom? Leader_is_All_Members.

In the year 2000, the System arrived on Gaia and changed the world of mankind. The environment became volatile and organisms evolved. To the humans, the System offered a class-base progression with a myriad of skills just like in old RPG games. From magic to bloodlines, as long as people immersed themselves in their passions, the System would incorporate their interests into classes and skills. And with the rise of new powerhouses, old nations were brought down and new ones rose from the ashes, stabilizing and governing their evolved populace.Around 500 years later since the dawn of the System, the story of our MC began. Drai was a musclehead, and his days were mostly spent for two purposes: becoming stronger and tougher! With his single-mindedness and crazy trainings he was finally offered a special class on the Revelation Day. From there on, his journey began. Starting from a prestigious academy and meeting his mentor and new friends, each with their own peculiarities, Drai steadily walked the path of power and invincibility. Party adventures, dark schemes, and veiled threats would accompany Drai throughout his journey.

When Han Kain woke up, he and several other people were inside a mysterious hotel with different rules and different expectations.Going into each hotel room threw them into other worlds and scenarios where they must brace death at times to escape or lift the curse of the individual rooms for a chance to bring everyone that died during the process back to life.Using their blessings that were given at the time of entry, they have to weave their way through the rooms while sometimes sacrificing themselves for a higher likelihood of success.* Very little horror; more of a thriller

In the end-French era, after countless calamities, the era of cultivation is coming to an end. The last combination of air transportation and evolution has evolved into the treasure board, which was obtained by the last practitioner in the end-French era, which opened up a legend of wandering heavens.

- Description from Uukanshu

It was a time where demons roamed the earth and chaos reigned. The story took place in Luoyang, the legendary capital of the times. During the night, one could find people holding on to their food with dear lives as they faced off against stray dogs, people with weapons in hand vowing to fight against Fate to their very last breath. There was bloodshed everywhere as some died meaningless deaths, while the strong tyrannized the weak and the truth was frequently hidden. Some of the citizens had completely lost their mind, while some died on their travels. Most importantly, the words of a certain youth caused much panic in the human world. It was a time of little warmth as nights in the capital were frequently accompanied by gusts of wind and rain, and it would be covered with snow during winter. Such were the days…

- Description from Novelupdates