MTL - Why is This Little Brother - Chapter 84 Cocoon Soul twenty-third

Following a brutal and tortured death, a former assassin, known only by his codename Kuro, is given the opportunity to reincarnate in another world, a world with magic and monsters. Armed with an unrivaled healing factor and an inhumane pain threshold, Kuro opts to go for a reckless direct approach in this world instead of a stealthy and cautious one, and as a result, slowly gains attention bit by bit.

Having previously been a loner in his old life, he interacts and befriends people for the first time in his existence, however, his blunt nature also sees him making just as many enemies, both big and small. By combining his old assassin skills with the magic powers of this world, along with his high resistance to pain and rapid regeneration, he doesn't take long to establish himself as a formidable force in this world.

Initially, Kuro only faces minor threats, like weaker monsters and bandits. But before too long, the threats slowly but surely become more and more severe…from Zombies to a bloodthirsty empire to Vampires and Demons, and even divine beings…however, as the enemies he faces grow stronger, so does Kuro, gaining rare powers that have never or rarely ever been seen in this world…

Born into a dirt poor mining family, Karl only had one chance to get ahead in life, the annual elite recruitment day. On their final day of middle school, every student in the Golden Dragon Nation was given an experimental injection to awaken their affinity with magic.

Those few who succeeded would become the Elite, the leaders and idols of the nation, blessed with incredible magical powers and respected by all. Those who did not would return to their normal lives of hard work and low wages, just doing the best they could.

But with the nation surrounded by enemies, both humans and monsters, how long would these peaceful days of magical idols last?

Follow the story of Karl as he awakens a unique power and strives to become the world's first Legendary Beast Master.

On the battlefield, the Avengers fell into a bitter battle, and when Thanos was about to win, suddenly, there was a loud noise in the sky, and only a huge battleship that covered the sky appeared above everyone’s heads, and opened the door from the battleship. A man stepped out of the hatch.

“who are you!”

Thanos felt uneasy and shouted loudly.

“Who am I, you ask?”

The man looked down on the world.

“Listen well, I am the doctor of Rhodes Island, the admiral of the tutelary mansion, the master of Chaldea, the commander of Griffin, the onmyoji of Heianjing, the knight of Princess Link, the dress-up master of the Miracle Continent, Rainbow Squad operator, Battle Commander, Duelist of Dueling City, Demon Hunter who can cry, Demon Hunter who collects Gwent cards, Ashes of No Fire, Master Ashes of Fireproof Lady, Destroyer of Outer Gods. Sever Undead The man of the sky. Grabber of Skyrim, god of war who slaughtered the gods of Olympus and Asgard. Assassin who wants nothing but love, little policeman of Raccoon City, ruler and protector of the border. King of Erden, High Lord of Azeroth, Warrior of Arad, Summoner of Valoran, Defender of Crossfire, Mercenary of Kuhan…”

- Description from novelbuddy

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