Immortal Starry Sky - Chapter 143 - 139: Will Level Body Technique

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.

A martial art expert from the Song dynasty lives like a Phoenix that can live again in another body after death. This time, he happened to take over the body of a Japanese high schooler who is also a victim of bullying and has a bit complicated family circumstances.

- Description from Novelupdates

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

This is a world where mountains, rivers, vegetation, animals, machinery, undead, elements… can all become war beasts.

This is a world dominated by beastmasters.

The swaying star dragon bird above the nine heavens.

A lightning elf wielding a long whip in a thundercloud.

The giant whales of the vast seas are entrenched in the mountains and seas in the depths of the ocean.

The ghost of the flame shadow jumping in the unquenchable candle.

Ji Feng flipped through the Book of Starry Sky in his hand and created one myth after another in this vast world of beasts.

Embark on a path that is unique to its own creator.

- Description from novelbuddy