World Development System - Chapter 223

This story is about a rookie researcher, who was forcefully dragged away from his restful life, compelled into facing various killers and zombies, always having to risk his life at the brink of death, and finally becoming an advanced researcher that is acclaimed by all. And throughout his adventure, he met an alluring(?) killing machine, who he started to have fantasies on after they had an accidental kiss…

Xiao Yan: Did I fall for him? But he’s a man!

Maya: Who knows…. maybe it’s the other way round?

- Description from Novelupdates

In the era of global evolution, humans and monsters coexist, and evolution is the only theme!

Chu Zhou traveled to this world. At the age of 17, he awakened the attribute panel!

Breathing method, combat skills, talents, you can upgrade with points!

Basic breathing method, upgrade 10,000 layers, and become black hole breathing method!

D-level combat skills, upgrade 10,000 layers, and become SSS-level magic skills!

Ordinary talents, upgrade 10,000 layers, and become true god talents!

…

Several years later, Chu Zhou stood on the top of the cosmic pyramid, facing many cosmic overlords, cosmic true gods, and cosmic sages, and summed up his life: Everything I have today is due to my hard work…Deep blue, add points!

- Description from novelbuddy

Due to investigating an arms case, he was forced to become a gigolo, from then on, the cute little loli, the sweet and pure young married woman, the cold and aloof CEO beauty, and all kinds of other beauties surrounded him.

Failing in his job hunting, Sanada Kyouichirou was hopeless in this society. When kyouichirou had thrown himself towards the bottom of a cliff. When he woke up his body had returned towards when he was in fifth grade of elementary school. He did not want to have any regrets in this life so he had decided on building up an harem in this second life.

The elder sister that he admired, a senior and president of the student council at a school for rich young girls, a strong minded upper classman at school. The poison fang of Kyouichirou who had pretended to be a innocent child attacks those girls.