Toaru Majutsu no Index: New Testament - Volume 17, Chapter 3: Or Isolation Surpasses a Group - Engage_U.F.O.

Qin Chen crossed into Taiyi Holy Land as a sweeper, and at the age of sixteen awakened the system. As long as he signed in at different places, he could get different rewards.

Sign in at the Land of Emperor Ruins and get the world’s No. 1 Chaos Holy Body and the Chaos Emperor Sutra!

Sign in to seal the magic land and get the quasi-emperor soldiers!

Sign in at the Refining Hall and get the God-level Refining Technique!

Sign in at the medicine garden and get the medicine of immortality!

Sign in at the Imperial Palace and get the Emperor-level forbidden magical power ‘Resurrection from the Dead’!

…

Qin Chen thought that he would just sign in silently until the world was invincible.

One day, the relics of the Great Emperor will appear in the Holy Land, all the holy places, families, and ancient dynasties have come, and there will be an unparalleled demon king in the relics, killing countless powerhouses, ruling the world, and wanting to destroy the Holy Land.

In desperation, Qin Chen could only walk out, slapped the Demon King to death, and sighed: “I just want to be a sweeper and sign in silently. Why do you force me to take action?”

- Description from novelbuddy

I have calculated for people before I was born, and I have all five yin, and I am born with fierce ghosts. A knowledgeable gentleman said that I will not live to be seven years old. After death, I will cultivate blood-clothed little ghosts to harm people.

In order to save me, my grandmother married me a child-in-law, so that I had an Ann birthday, although I later discovered that the daughter-in-law and sister-in-law are not human…

I have been lingering and panting since I was a child, and I have been accustomed to accepting it, but my grandmother was killed.

For this reason, regardless of karma, I inherited my grandmother’s job of raising ghosts and vowed to send everyone who killed her to hell.

- Description from MTL

[Warning: Adult Content (R18+)]Maxwell Williams, a 20-year-old shut-in and the son of a rich man, faces the cruel reality of the world after the crazy world leaders nuked the whole world, killing countless people and destroying all infrastructure and the hope of survival.Not trained for the tough life of the post apocalyptic world, Max is on the verge of despair when suddenly...[Congratulations host, for getting the Almighty Harem System! Make a harem and become the supreme.]He gets a system.Armed with the Harem System which he always dreamt of having, watch as he conquers the beauties and create a haven for himself in this hellish world.----Additional Tags: No Disgusting NTR (Only Netori) | No Yuri | Milfs | Legal Lolis| Taboo| Okyadon | Slaves | Manipulation | Possesive | Cold | etc.If you like the above tags, you'll love the story.

Disasters descended one after another, like updates in a game:Rampant virus (Completed),Magnetic storms (Completed),Extreme cold catastrophe (Completed),Torrential floods (Completed),Scorching heat waves (In progress).