I recommend an online novel about the main character using guns. In the game, he is related to the system mainframe and can grow in size in real life, looking like an alien. The main character also used guns and rode a dragon, traveling alone.

In the Year 2030, the ground-breaking online game “Divine Realm” shook the whole world. Its system of allowing players to exchange in-game currency into real-life money attracted everyone’s attention. Lorne was also a player of “Divine Realm,” but he had a unique talent—the Monster Merging Simulator. It allowed him to merge a “prototype material” and “body parts” to create a new monster and tame it. [Slime] + [Poison] = Poisonous Slime (Elite)! [Brown Bear] + [Granite x5] = Rock Bear (Bronze)! [Spider] + [Baphomet’s Skull] = King of Bone Spiders (Boss)! [Leader of the Minotaurs] + [Lava’s Core] + [Fire Elemental Inheritance Crown] = Lord of Flames (Silver Boss)! With that, just as other players were trying their best to level up, Lorne and his powerful pets began their expedition to the Dark Abyss that was shrouded in darkness…

Bell Cranel was rejected by every familia he tried to join until he met Hestia. In a few, he was rejected quite violently. And in one particular instance, he was thrown out and bashed his head against a wall. Well, that's apparently where I come in. Not sure how and why I'm here. Not even sure who 'I' really am at this point since Bell's memories are definitely clearer than 'mine'... But I guess we're doing this. Hopefully I've got some useful cheats. Maybe?

# ALTERNATEWORLD [Successfully enhanced the Golden Snake Sword. The Winged Serpent Empress has been summoned.] The Winged Serpent Empress said, “Master, please give the orders!” [Successfully enhanced the Demonic Soul Armor.] Zhou Han exclaimed, “Demon Princess, please don’t possess me!” [Successfully enhanced the skill ‘Evil Light Ghost Queen Slash’. The Succubus Ghost Queen has been summoned.] A Ghost Queen? With enough guts, Zhou Han could make the female ghost go on maternity leave. Zhou Han astonishingly discovered that he awakened the only SSS rank talent in the universe: Infinite Enhancement. He was overpowered.

Qin Lin was playing a nostalgic game called “Ranches Story” when he was electrocuted. He suddenly discovered that he had the ability to enter into the game. He could even bring a watermelon he had planted in the game back to reality. At first, his plan was to sell watermelon for 2 yuan a catty. In that case, he could earn 20,000 yuan by planting 10,000 catties worth of watermelon in the game every day and selling them in reality. Later on, he discovered that by leveling up his ranch, he could obtain high quality crops that surpassed that of the real world. If he reared livestock, they were of far higher quality than that of reality. After he built factories, he obtained various recipes that far surpassed that of the real world. Everything changed after that.

Lee Fei is a normal 30-year-old man who has a good job as a librarian at the National University in China. He is an avid reader and has always read everything, including BL and GL, even though he declares himself 100% straight. He died just like that. There was no truck. There was no car accident. No deadly disease. Lee Fei reincarnated and transmigrated to the world of the book he had read days before he died. Unfortunately, a BL Dark Book. The worst, he transmigrated as an insignificant side character! Lee Fei became Emery Darcy, who is the third child of a powerful duke. Your life should be full of wealth and happiness, right? Unfortunately, Emery Darcy followed the path of an exorcist! Yes, Emery Darcy is an Exorcist Bishop! To make the irony of his situation worse, this side character had a worse fate than the villain. What an injustice! As the knowledge of the plot of this world, Lee Fei intends to return to the home of his rich family and live a good life! So, what if he has divine powers and MANA from nature? He just wants a rich and peaceful life! Ehhhh? Is the MC making a honey trap for me? Is ML no longer a possessive demon, but a tsundere that is following me? Is the fallen archangel a shameless voyeur who spies on me even in the bath? A guardian knight who thinks I'm the reincarnation of the god of nature? Stay away from me, I just want a peaceful life! Does apocalypse come far? No matter, I'm rich enough to protect myself! Let's have a happy and rich life as a good nobleman should be. NOTE: 1. R 18 2. Chapter Auxiliary with the main characters of the harem so far; 3. Harem Romance 4. Follow my Ko-fi for news and weekly calendars: https://ko-fi.com/post/Calendar-1001--1601-L4L27V5L9 and Ko-fi.com/take_the_moon. Thanks for your support in the 2021. Hope we're together in 2022 too.

Razel, is a reincarnated youth. In his previous life he was a lonely boy who spent his days playing video games. Then one day tragedy came into his life. It all ended for him, was what he thought, until he opened his eyes; to find a fantasy world, where science and magic go hand in hand. That could have been a joy, but that happiness was nipped in the bud, because he reincarnated as the eldest son of a poor family of barons without territory, and, above all, he is uglier than in his previous life. His tragic new life doesn't end there, as he woke up in the last video game he played. An otome game. But not just any otome game, it is one with an RPG theme so it is made up of strong and dangerous enemies. He will have to live his new life as a background character and help from the shadows to the capture objectives and the protagonist to avoid the end of the world and especially, the cruel villainess.