Reborn with the Devil's system - Chapter 3: "Blood debt"

Three years into Qin Yu's marriage, his wife and in-laws all hated him.

The Mc reincarnates in a world of magic and adventure as a Leech, follow his adventure in this mysterious and exciting world as he goes from the weakest creature to the shadow being that everyone is afraid of. Will he pursue the path of strength alone? Or without realizing it he will become the king of the greatest empire that ever lived.

Chen Mu, a low-level officer, thought he could only live a cautious life, but unexpectedly he got a system panel that could accumulate experience, and he could master all the skills with just one practice.

[Blast Knife + Gale Knife + Wind Chasing Knife = Blast Artistic Concept]

[Jade skin grinding method + sand iron method + coarse salt method = skin of copper and steel]

A peerless martial saint with unparalleled swordsmanship, bronze skin and iron bones, and a body of pure gold was born step by step.

- Description from novelbuddy

As a successful author, Max was used to hate comments but he never expected that his decision to kill an important character would result in his death.Apparently, the Goddess and her brother used to read his novels and were both a big fan of his works. Sadly, the brother didn't like his decision and killed him.As compensation, the goddess decided to send Max in his own novel as the protagonist and complete the story without letting any of the main characters die.Max had no problem with that, so he accepted it and asked for something else too.“Can I court you?”Now, he has the Goddess accompanying him as the Ultimate Leveling System. Not only that, his system also rewards if he saved the favourite characters of his novel. What could be better than this life?[You have Killed the Giant Behemoth Dragon, granted 200000 EXP.][You have saved the side character, Charlotte Sinclair, granted the fortune worth Corelhelm Kingdom.]Watch as how the author makes the harem of his favourite characters while leveling Endlessly....What to expect-Leveling+Mana Cultivation+Labyrinth adventures-OP MC-Light Hearted, Low stakes-A proper Harem and good romance-Very less Smut (yeah, the number of those chapters will be very low as I intend to focus on relationships, adventures and of course Labyrinth stuff.