World Development System - Chapter 312: 243. The Blood-Bone Marrow cleansing pill

After getting hit by a truck, Hayate Kurogami experienced something bizarre. He arrived in alternative world and awakened as Kaiju Maker.Unfortunately, he was forced to leave this world.Sacrificing himself for goods, Hayate reincarnated to another world.A cultivation world filled dangers and charming beauties.Watch our protagonist become stronger, adventuring the vast universes to achieve the highest realm.1st World: Against the Gods

After successfully completing the tasks of the B-Class World, Lu Yue finally succeeded in entering the A-Class world.

What? The blackening value of the males in the A-class world is above 80!!

Lu Yue: What are you afraid of? Calm down!

This is a story of a drama king and a black-bellied male.

First World: Mafia’s Pet Lover
Second World: Revenge of the Reborn Boyfriend
Third World: Emperor is a Ladies’ Man…

- Description from Novelupdates

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

Betrayed and left for dead, Richard Blackwood—formerly known as the world renowned hero Astralis—awakens a decade later to find the world has moved on, and an imposter now wears his mantle. Disguised as a rookie in the Mage Guild, he quietly hunts for answers.'If my little sister is levelled above me, then what about everyone else? How much stronger have the bastards who betrayed me grown while I was dead?'Richard must grow stronger once again, and rise much higher than the S-Rank.'What the fuck? I almost die, and I get a power up?'Not harem.