Adolescent Adam - Volume 1, Chapter 1 - Blue-Burned Sky

A side story series featuring the girls of Kyoukai Senjou no Horizon.

Xiang Ye, who was working overtime and died suddenly, woke up and found that he had turned into an acre of land.

Just when he was at a loss, several big men carried a female corpse and buried it under him.

The accidental corpse dumping case made him uneasy, but then something even more shocking happened. The female corpse buried deep in the ground came to life on a certain moon hiding in the clouds at night…

“I don’t want to be a paradise, I want to be the most ferocious and most evil in this world.”

PS: It is probably the story of an acre of wasteland becoming a fine.

- Description from novelbuddy

After an ultimate battle against the King of Hell Lucifer, Asmodeus, the Vampire Emperor, has fallen. Although he lost, he died without regrets and with a smile, prideful that he had managed to corner the King of Hell himself to such an extent.

However, due to a sick twist of fate, Lucifer himself decided to reincarnate him into the feeble body of a human child named Blake, desiring a rematch in the future!

Now, given a new opportunity at life, Blake will use every possible way to grow stronger and protect his new family in a turbulent world where people can summon spirits to fight and develop their magical powers.

Armed with only a Grimoire, he’ll slowly summon all of his previous life subordinates, who are all powerful Vampires, and rise to the top while fighting the ever-growing menace of the Demon Towers.

Accompany Blake through a journey filled with excitement and growth and experience the rise of the Vampire Emperor. A new Era of Blood is about to begin.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates