The main character in the e-book was called Ryuichi. What was the name of the book?

I don't think it will necessarily meet your needs, but I will try my best to recommend a novel that is most relevant to your description of your needs. My Dragon King Breaths Fire is a sci-fi novel about time travel written by the author, One Smile Ten Miles. The general plot of this novel is: Minor Actor Shen Que, who was carrying a smartphone, said, Starting from Nezha, he dominated the millions of worlds. "Investiture of the Gods","Prosperous Age of Tang", "The Fall of Tokyo","A Chinese Oath to the West", The War of the Myriad Nations. The author's new book," The Age of National Movie Watching " A different movie, please pay attention. ---------------------------- Call Me Dragon King was a sci-fi interstellar civilization novel written by the author, Rogue Xiao Luo. The general plot of this novel was: In the world where technology and cultivation were combined, a monster appeared and soared up with the disappeared " dinosaur ". He called himself the Dragon King and commanded thousands of armies to crush everything with absolute strength. Welcome to the world of Call Me Dragon King. ---------------------------- Emperor Dragon Rider was a fantasy novel written by Gao Sen. The general plot of the novel was: Fighter pilot Dragon One transmigrated to the White Dragon Empire. In order to return to the sky, Dragon One entered the Dragon Knight Academy to study. Here, one could learn battle energy, cultivate magic power, raise a giant dragon, and possess the strength of a giant. Through continuous cultivation, one would eventually become a royal dragon knight... ---------------------------- " The Glorious Title of the System " was a novel written by the author, Old Lin of Longgang. The general plot of this novel was: The new book," The Tale of the Dragoon and the Dragoon Envoy," was released. It was an emotional Western fantasy that told the story of the Dragoon and the Dragoon Envoy. ---------------------------- The Legend of the Dragon Rider was a game novel written by the stubborn Ah Long. The general plot of the novel was: The world's number one Dragon Knight, Luo Hui, had transmigrated to another world. You said that you are a Dou Shi and know Dou Techniques! My apologies, my "Dragon Tail Wags" is not only a fighting technique, but it also has a stun effect. You said you were a mage and knew magic! My apologies, my Flame Breath is not only a spell, but it can also be upgraded and strengthened. You said that you are a descendant of a demon master and that you were born with a part of the tyrannical constitution of a demon beast! I'm sorry, but my 'dragon bloodline' can be said to be an unkillable cockroach. You said that you are a hereditary noble, a pure-blooded Demon Master, and can transform after reaching the ninth tier of the Dou Shi class! I'm sorry, but when I use my True Dragon Form, I can turn into an ancient dragon from an extinct continent. Let's see how Luo Hui, the king of the game, would use the skills and concepts of the game to create a true legend of the Dragon Knight in the world of swords and magic. Communication group numbers: 536, 738, 625. ---------------------------- " Guide to the Game Universe " was a game novel written by the author, Old Bin Xianglong. The general plot of this novel was: The book readers should be able to guess the general content from the title. This was a cosmic version of Apollos 'Travels. Under the halo of the protagonist, a lucky kid went around fighting monsters to level up. All the readers who are passing by, please add them to your collection and vote for them. Hmm…A good person will live a safe and healthy life. Above... ---------------------------- The book " Dragon Energy " was a fantasy novel written by the author, Flying Sword. The general plot of this novel was: The Thousand Dragon Continent gave birth to tens of thousands of dragonman races, including the Brutal Dragon Race, Stegosaurus Race, Trihorn Dragon Race, Sawed Tooth Dragon Race…The tribes and the alliance were in a state of war. Dragon Qi was mighty and domineering. It was the majesty of a dragon, and even more so, the spirit of a dragon! Tu Qiang was a mixed-blood who had been branded as a slave since he was young. He was righteous and fearless. Condensing dragon energy, forging a dragon seed, transforming the bloodline into a dragon, revealing the dragon form, flying dragon without regret…No matter what the future holds, I will press forward! ---------------------------- The Nirvana Dragon Exalt was a fantasy novel written by Qian Mo Shanghan. The general plot of the novel was: In ancient times, when the world was first created, the Ancestral Dragon created the world and ruled over all races. A Heavenly Book fell from the sky, and many cultivators coveted it. A life-and-death battle began. The dragon race was destroyed, and the Ancestral Dragon Scripture disappeared. A young man awakened the dragon vein, cultivated the Ancestral Dragon Scripture, and embarked on the path of a strong person. ---------------------------- Dragon Hunter was a virtual online game novel written by the author, Terror Hall Thief. The general plot of this novel was: In order to compete with the dragon for a place to live, the officials released a realistic virtual game. Shiji was sent to the future by lightning, but he took a different path from everyone else. People and dragons are enemies, and Shiji and dragons are friends. People kill dragons for profit, and Shiji rescues dragons for profit. When the ability in the game could be brought to reality, he would see how Shiji would use the ability in the game to create his own future in reality. ---------------------------- " The Dragon King of the Other World " was a novel written by the author, Onion Mirai. The general plot of this novel was: The PVP champion of the most popular VR online game of the 22nd century, Dragon King, had arrived in the real world of the brave without any warning. The strongest player in the game, Nio, was about to embark on an unprecedented magical journey in the Otherworld with his identity as a Black Dragon Warrior and Magician!