The Best Assassin, Incarnated into a Different World's Aristocrat - Chapter 79 – The assassin advises

The end of the world is coming, the world has undergone great changes, and everything has changed. Plants, animals, and even insects, as long as there are living things, have mutated.
Become more powerful, and even evolved supernatural abilities, such as chickens and ducks that can fly to the sky, such as cats and dogs that can breathe fire.
But only humans, without any obvious changes, seem to have fallen from the top of the food chain to the bottom of the food chain overnight.
Any creature that can open its mouth to eat can treat humans as food.
But fortunately, this world has not completely killed humans. Gradually, humans discovered that they had the ability to cultivate compatibility with other creatures.
As long as it has a high degree of compatibility with some powerful mutant creatures, it can be used for its own use to achieve the purpose of protecting itself.
Fang He is a person who is very compatible with mutant animals, but it is also because of his ability that he has changed from the strongest to the stupidest.
Fang He, who was reborn, said, “Hmph, this time…”

- Description from novelbuddy

A series of short stories in the world of Toaru Majutsu no Index organized into chapters featuring Kanzaki Kaori as the protagonist, going around the world and space doing missions for the Church of Necessary Evil, however, there is more than meets the eye as each incident is connected.

One chapter was bundled with each limited edition release of the Toaru Kagaku no Railgun anime DVD and BDs, with all of them together being equivalent to a single normal Toaru Majutsu no Index volume

Cecily was a scrawny girl with no friends. However, like all other girls, she yearned for true love. She always had a crush on Robert, Alpha’s son in their Pack. However, on her eighteenth birthday, she found out that Robert was her Mate!

Before she could hug him in excitement, Robert had already flung her hand away like a piece of trash. “You will not become my Mate. Pretend that nothing happened today. Leave and watch your mouth. Do not say anything that you should not say!”

Robert publicly ogled at the sexy, beautiful blonde Alison at their high school graduation. The graduation trip changed Cecily, making her stronger, more confident, more vibrant, and more beautiful and sexy. Furthermore, Robert, who met her on his college campus again, began to pursue her. “You should be my Luna. We will live together from now on. We will have lots of kids. They will be healthy and smart.” Robert’s eyes were filled with lust. Robert’s pestering made Cecily feel disgusted and nauseated!

As Cecily could not protect herself from Robert due to the difference in strength, Michael appeared. “Your actions make you unworthy as an Alpha.” Michael looked at Robert with disdain.

During Robert’s inauguration as Alpha, Cecily could no longer tolerate his pestering. “I, Cecily Levin, reject Robert Paslo as my mate.” When Robert was furious and in pain, wanting to hurt Cecily, Michael appeared again! “Cecily was the Mate arranged by the Moon Goddess for me.” Michael looked at Cecily gently. “Whoever dares to touch her is disrespecting the royal family.”

He is a ger who came from feudal times. His greatest wish is to have a piece of land that belongs to him, marry a hard-working man and have a lovely baby. Live a simple and warm life.

He is a major general of the Federation, cold, ruthless, frightening, aloof. It’s the label given by everyone who knows him.

However, the failure of a mission made the strong and cold him encounters the delicate and gentle him. People of two extreme personalities unexpectedly get along harmoniously.

The world says,

The reason why he is cold is that he gave all his tenderness to his little husband.

Only when his little husband is around him can he become approachable.

- Description from Novelupdates