Unfortunately, the protagonist of the adventure book was the Demon King. Is this a light novel adaptation?

I'm not entirely sure about its popularity. It might be popular among certain niche groups who are into dark fantasy or demon - related stories. There could be a dedicated fan base that enjoys the unique elements and plotlines it offers.

It depends. Some fans of the fantasy and isekai genres might find it very popular. It often has elements like a powerful demon king getting a second chance at life, which can be really appealing to those who enjoy such storylines.

😋I recommend "As the Demon King, I'm Working Hard to Farm" to you. It tells the story of an otaku who was addicted to anime, comics, and games all day long, Xiang Zuoyi, who transmigrated into the Demon King of the Otherworld. As the Demon King, he had the heavy responsibility of leading the Demon Race to revive, but when he saw the Demon Race's morale drop after the defeat, the devastated land, and the war compensation that made his legs go weak at a glance, he shouted to the sky in despair,"Can I still transmigrate back?" I hope you like this fairy's recommendation. Muah ~😗

" Disciples Are All Demons " is a fantasy novel written by the author, Scholar Li. The general plot of this novel is: Tianming Li had transmigrated to the Tian Xuan Land, where the legend of the seven female devils was spread! It was said that these seven female devils were bloodthirsty and committed all kinds of evil. However, he never expected that. The rumored demon was actually his disciple… ---------------------------- " The Descent of Gods and Demons " was a fantasy novel written by the author, Bliss Boy. The general plot of this novel was: Li Jian had transmigrated to a foreign world full of demons and ghosts. When the gods and demons were about to descend, he relied on his ability to see through other people's cultivation techniques to rise step by step in the darkness and chaos… ---------------------------- " The Ancient Demon of the Supremes " was a fantasy and oriental fantasy novel written by the author, Mantou of the Southern Song Dynasty. The general plot of this novel was: [Explosive Fantasy] Young Li Feng obtained the inheritance of the Ancient Devil and fought countless geniuses in the Nine Skies and Ten Lands. He suppressed them all the way and became the ferocious name of the Ancient Devil! Possessing the strongest demonic physique and stomping on the most ruthless enemies! His new book," Dragon King Swallow Dragon ", was asking for all kinds of support! ---------------------------- " Evil Saint of the Nine Realms " was a fantasy novel written by the author who hid a sword for ten years. The general plot of this novel was: The tallest tree in the forest would be destroyed by the wind. Li Shenrui, the proud son of the Divine Might Marquis Estate, had unparalleled talent and was famous throughout the entire Qing-Yun Realm. However, he was harmed by a conspiracy and was planted with the Spirit Trapping Lock. His talent was lost and he fell to the mortal world. The heavens had pity on him, and the heavens could not bear to see him. Li Shenrui had accidentally obtained the inheritance of the Evil Venerate, cultivated the supreme ultimate art, cultivated the first evil technique, and swept the world with the body of destruction. ---------------------------- Ascending to the Heavens as a Demon was a fantasy novel written by the author, Xi Jueran. The general plot of this novel was: What was a demon? Li Xijue said: When I reach the highest point, I will be a demon. ---------------------------- " Ten Thousand Beasts Talent System " was a fantasy and oriental fantasy novel written by the author. The general plot of this novel was: Li Mo Chen had accidentally transmigrated to another world and had a Ten Thousand Beast Talent System with him. There were all kinds of magical powers recorded in it that he could use at will. Hence, he became stronger. The Vajra Mighty Ape's indestructible body, the Ancient Heaven-Swallowing Python's Devour Heaven and Earth, the Five-Clawed Golden Dragon's Imperial Dragon Might, the Golden-Winged Roc's Heavenly Peng Crisp Technique…With all of the Supreme Deity Skills in hand, Li Mo Chen swept through the Demon Realm, entered the Demon Realm, suppressed all races, and wherever he went, the gods and demons avoided him. All the heroes submitted to him, and he was invincible in the world! ---------------------------- The Peerless Heavenly Venerable was a fantasy novel written by the author, Feng Yuezhi. The general plot of the novel was: The young Li Feng was reborn in the Divine Dragon Continent and obtained a supreme inheritance by chance. From then on, he rose up against the heavens! I can destroy the Son of Heaven with a flip of my hand! Even if the gods are wise, I still dare to compete with them! A Chaotic Nine Dragon Bracelet swept across the world and flattened the myriad worlds! I am a Heavenly Venerate, peerless and invincible! ---------------------------- " The Legend of the Godslayer and the Heavenslayer " was a fantasy novel written by the author, the Godslayer and the Heavenslayer. By chance, Li Xuantian had obtained the memories of the ancient god, Sky Splitter. From then on, he embarked on an unusual cultivation path. Countless monsters, demons, immortals, and gods would appear one after another. Let's see how Li Xuantian and his friends would laugh at the world. ---------------------------- The book," Heaven's Path Worker " was a fantasy and modern magic novel written by the author, King Mo. The general plot of the novel was: Li Chen crossed through the Mysterious Sky World and became the new Son of Heaven Yin appointed by Earth's Heavenly Axiom. You're the Emperor of the Dynasty of Providence! You're the master of a Holy Land! You are a giant of the demonic path, kill! Billions of ghost soldiers rampaged through the Mysterious Sky World. Wherever the Underworld passed, the name of Son of Heaven Yin resounded throughout the world. ---------------------------- " The Legend of the Great Ruler, the Heavenly Emperor " was a light novel by the author, Li Baolan. The general plot of the novel was: "Daluo Golden Palace, Ancient Celestial Palace, I am the second Heavenly Emperor!" Its god is called Yao Po Bao, who is in charge of controlling the spirits and holding the picture of ten thousand gods.

I recommend a novel called "The Strange Person of the Sealed Dao" to you. It tells the story of Yuan Xiao waking up to find himself lying in a coffin and eventually becoming the heir of the Demon King. I hope you like this fairy's recommendation. Muah ~😗

Here are some recommendations for novels about the protagonist becoming a demon king: 1. " Reborn as the Great Demon King ": The story of the male protagonist becoming the Great Demon King after his rebirth, conquering and dominating the world. 2. [Dungeon Descends, I Become the Demon King's Consul]: The male protagonist gains the ability to enter dreams and becomes the Chief Consul of Helcrown. 3. " Devil King's Apostle ": The male protagonist becomes a devil king through the Great Devil King System. I hope these recommendations will meet your needs!

I recommend " I am a Parasitic Flower ", a sci-fi novel about evolution and mutation. The male protagonist was parasitized by a parasitic plant and became stronger. Later, he met someone who was parasitized like him. However, the male protagonist had been looking for a way to remove the parasitism. In the end, the male protagonist successfully found a way and killed the parasitized demon king.

The following are a few recommendations for romance novels with the male protagonist being the Demon King: 1. " Lord Demon King, Don't Run ": The female protagonist transmigrated into a demon and longed to become a demon king. The male lead was a demon king. In order to love someone, he was willing to give up all his pride just to become the person she wanted. The novel was humorous and the plot was interesting. 2. " Snake King Begging for a Concubine ": This is an ancient romance novel. The male protagonist is a snake demon, and the female protagonist is a princess who was sold to another royal family. She married the male protagonist and became his princess. 3. " The Demon King Marries ": This was a novel about time travel. The female protagonist traveled to another world and became the wife of the Demon King. I hope these recommendations can satisfy your needs for romance novels where the male lead is the Demon King.

There were a few novels in which the protagonist was reborn as a demon king that could be recommended. Among them," Lord Demon King, Don't Run " told the story of the female protagonist who transmigrated into a demon and longed to become a demon king. The male protagonist was a demon king. In order to love someone, he was willing to give up all his pride just to become the person she wanted. In addition," Ancestor of All Demons " told the story of the protagonist being reborn as the tiger king of the beasts in the forest, vowing to reverse the tragic situation of the demon race in the world. This book was written from the perspective of a demon. The plot and characters were not bad, and the world view was rich and grand. I hope these recommendations will meet your needs.