At the start, I tricked the school beauty, and ended up with twins? - Chapter 163 The Human Heart is Unpredictable

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.
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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!

In the year 2030 a world where magic reigns supreme, Ellard a being formally known as the “Mighty Overlord” who was humanity’s strongest.Had conquered many battlefields during his youth making his names known far and wide.However, during his last battle he was caught up in a plot made by the goddess of death who feared his existence due to his constant support to the goddess of vitality and was sent to his death for eternal sleep.However, the goddess of vitality was able to get to his soul while he was crossing the path between life and death, she granted him a second chance of life...Now one thousand years later he was reborn inside the body of a nine-year-old boy who had suffered a great misfortune after his father was assassinated and his mother had lost most of her noble influence, which resulted in their family suffering ridicule.

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.

Brolin, the nine emperor of the Black Dragon Mountain Empire, accidentally obtained the system of the realm of the world, and began the legendary journey of the battles!

In the Naruto world, with his star power, he overwhelmed the shadow-level powerhouses, grabbing reincarnation, and becoming a ten-tailed person!

Fighting the mainland, he led a large group of lords, surrounded the ancient eight clan, and confronted the peak Dou Sheng!

Covering the sky, he broke into the restricted area, seized the emperor’s scriptures and immortal medicine, and called the Lord of the human universe to fight supreme, and the sky was falling apart!

In the eternal life world, he crosses all realms, and fights against the Supreme King of Stone with the attitude of eternal true God!

Immortal continent, he jewels Jiuyang, looks down on immortal ancient, strong sky!

The perfect world, he runs across the sea, suppresses the heavens, and the Zhunxian Emperor must retreat!

Thinking of the eternal world, he ascended to the realm of Supreme Hunyuan, the fifth step of the war, Bai Xiaochun!

Heaven and earth, this is an epic of the black dragon!

- Description from uukanshu