[System] How To Be A Great Parent

Experiment XXX was on the verge of his death due to the experiments conducted on his entire body, no parts of his were spared and he couldn't do anything to change his fate. Paralyzed by those monsters, words that said "It's for the sake of mankind". All for the sake of a dying world.  It's terrifying, how desperate circumstances could drive the scientists to madness. From their madness, they're willing to discard the kindness and humanity within them. It was futile to attempt but he has become an it. The breakthrough that no one would know.  Then the misery of his finally came to an end only to transmigration into a new vessel by a mysterious being. Thus, his journey begins when he reopened his eyes.  Journey about how he will become a parent and what will the obstacles lay ahead?  [Author's Note: Hello Lovely Readers! Thanks a lot for checking this story out, this story is going to be dark and will have some mature themes also, etc will be mentioned in the story.  MC has a system. He really has a system! Just to let you know that he has a system. I repeated it thrice because it's important. It's not fast forward pace and each arc can reach 100 chapters or more or less.  My grammar skills aren't exactly good as it's not my first language but I will try my best to make it readable and good enough. Thanks for reading until the end. May you have a great pleasurable day ahead.]