Starting With The Sefirah Castle In The Anime World - Chapter 21 - : Undercurrents Underwater

Aaron, a wildlife biologist, became a military strategist right after a global war between nations began.He never wanted to participate in the war but he had to, because he wanted to continue his studies on endangered species the moment the war was over, but to his surprise, everyone in his unit were killed, including him, and the next thing he knew, Aaron woke up in the body of a young noble having a similar name to his.However, he also noticed he had awoken in a world different from Earth.In this world, demonic beasts ran rampart with only one thought in mind, causing them to feed on anyone they see, be it humans, elves or even magical beasts as well.During his first encounter with a magical beast, Aaron awakened a system which allowed him to bond with magical beasts and to obtain terrifying abilities from these bloodcurdling magical beasts, so he used his experience as a wildlife biologist to help make it easier for him to bond with these beasts.However, Aaron also noticed he could evolve these beasts if their loyalty towards him had reached a certain level, so he vowed in his heart to grow strong enough to protect those he cared about in this world with the hope of living a happy, peaceful life where he'll be able to focus fully on his passion as a wildlife biologist.

The 7-year-old little crybaby met 11-year-old big brother who ran away from home.
[This man became the protector of redemption in his life]

The 16-year-old little dragon fell in love with a 20-year-old big brother.
[It’s a pity that the big brother didn’t recognize him as the little crybaby]

The 23-year-old single father and 27-year-old chief executive meets again.
[This time the little crybaby and his big brother are finally together]

Fortunately we met through hundreds of millions of people, Thank God, for letting us break through many obstacles and get back together again, falling in love with you and being with you again is the greatest fortune in my life.

- Description from Novelupdates

System: Want to live? Want to recover from illness? Want to change Da Zhou’s fate? You only need 998 points to redeem a package guaranteed to cure all diseases and strengthen the body! You don’t need 2400 points, also don’t need 1200 points only 998 points. You won’t suffer losses or be fooled! Welcome to the system of the king of the dead…..

Ji Jinrong: This name does not sound very auspicious

System: Don’t pay attention to these details /(ToT)/ ~~

Ji Jinrong killed all his brothers. At the age of thirteen, he dragged his sick body to the throne and worked conscientiously as a puppet emperor in the hands of the courtiers and eunuchs. Everyone says that the great general Wei Tingjun has wild ambitions, and is intentionally revolting however, Ji Jinrong felt that Wei Tingjun was not staring at the throne but at him, who was sat on the throne!

Ji Jinrong carefully tempted: “If I die you can be the emperor.”

Wei Tingjun: “You dare die, I’ll have everyone buried with you!”

Ji Jinrong: “…..”

See, it wasn’t his misconception.

So even if it was to just tie the head of the wolf, he (JYR) won’t die easily.

Ji Jinrong: It’s getting cold, its time to ruin the country. I (imperial) have to go back and look for (tie) the great general!

- Description from Novelupdates

She had never been real to them.“I never thought of you as my wife.” Even her husband by contract,“My wish? It’s for you to disappear.” Nor the son she didn’t share a drop of blood with.Daphne decided to give up everything then.The Madam disappeared. To be precise, she disappeared before the Young Lord’s birthday, leaving only a single letter. Everyone didn’t mind and thought that she would be back soon.One day, two days, ten days.The Madam didn’t return, and everyone went looking for her. But it was already too late.