Immortality begins with Becoming an Alchemy Grandmaster - Chapter 27 - :1, Brother Wang, Never Lick a Poisonous Knifel

Leon was once an ordinary man—until he died saving children and woke up in a new world as the last prince of the demon race. But his awakening comes with a cruel truth: the war is already over.The Demon King is dead. The once-mighty demon empire lies in ruins. And now, Leon stands amidst the ashes, surrounded by a handful of survivors teetering on the brink of extinction.Crowned Demon King by default, he holds the title—but there is no kingdom left to rule. The few remaining demons are barely surviving, hunted and outnumbered. Worse still, Leon, who once enjoyed the luxuries of modern technology, must now navigate a harsh world stuck in the Middle Ages.Can he pull the demon race out of their misery? Can he reclaim the power they once held? Or will history remember him as the last king of a fallen race?Follow Leon on his journey to rebuild, conquer, and defy fate itself.

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

One of the rarest type of magician exist in the world. Who would able to underestimate summoning and ordering a mighty pheonix, or summoning an invincible dragon? Of course, none.

To master the path of summoning, only those born with an innate talent and strive to learn the path of summoning magic might be capable of achieving and master the powerful magic.

But not for Lyan Arcanium Evocatore. After succeeding defeating his lifetime quest of saving the human world by offering his life, the great incubus's wish of living freely got granted and he wakes up at a parallel world with 8 powerful spirits contracted with him and a summoning grimoire.

[The gods have granted you the Grimoire of Summoning: Creatures of Love]

[You're capable of obtaining the summonable monsters by having affectionate intercourse with your romantic interests]

[The Grimoire is chosen in consideration of the host's former occupation as an incubus]

“Intercourse!?”

But not only the grimoire, The other problem is...

-You are?

-Whoa... What with this weakling?

-It seems that you're my master, nice to meet you

-So you're the forementioned servant, huh!?

-B-Big bro! Y-You're the summoner!

-........

-Boy, you look delicious

-Um... Where exactly are we?

“How should I know!? And why the hell should I sleep with women in order to get my summonable monsters!?!?”

Follow the summoner Lyan as he collect monsters, get dragged into different kinds of war, became the greatest feudal lord, battling the goblin king, facing the dragon tribe, and opposing the evil god followers!

One of the King of Kings Series