Rebirth System: Blood and Ash - Chapter 23: Trainer.

A journey through space and time... a lost soul that will find the answers about the past of a world and the mysteries of an ancient war.

When Adam finished his turn and then was preparing to go home after several hours of work, his team received a fire alert. He didn't expect that he would die following his father's footsteps, but fate had something else in store for him.

Adam died, but he was reincarnated in another world as Aion Kresnik, with his memories intact. Still, an easy life wasn't waiting for him despite the fact that he had a system and the ability to change jobs and make a spiritual weapon change to many forms. The reason for that was the fact that he was the son of a war hero and, at the same time, the son of a war prisoner and one of the last members of a powerful bloodline of mages. A bloodline that was hated by the whole world.

Aion's goals in that world were simple, get rid of the discrimination surrounding his mother and then find out why he was reborn with such a system since he knew that things couldn't be that convenient...

As childhood sweethearts, they were made to engage under the manipulations of their families. It involved having to to live in the same room and sleep together.

One night, she is accidentally made drunk, and in his delirium, he kisses her only to realize he enjoys it. From time to time, he would sneak a kiss on her, but his “crime” is eventually discovered in an accident. After being accused by her, he says with a smile, “You are my wife, why can’t I kiss you?”

The two people’s daily routine is full of bickering and mutual discrediting of each other.

Although he claims to disparage, he actually cares intensely about her. He feels crazily jealous when she is close to other men, to the point of tying her to his side, so that she becomes exclusively his.

- Description from web

In this era filled with countless wonderful talents, no one has any expectations for a pair of weak fists anymore!In the human world, there are swords that surpass all the heavens, spears that sweep away thousands of armies, fires that burn everything, and thunder that shatters the sky!Young people have too many choices, and everyone will move towards the most handsome, coolest, and most powerful!Only the stubborn boy chose to practice the fragile fists in front of him.Everyone thought he was crazy until the disaster struck.

The year is 2025. A devout Christian named Arthur Bennett wins a lottery to participate in a revolutionary virtual reality experience at a high-tech company called Elysium. The program utilizes a unique VR pod to immerse users in a world based on a popular anime.As the other participants—a mix of personalities with varying degrees of anime knowledge—prepare to enter the simulation, Arthur remains the only one who has never indulged in anime. Upon entering this new world, he discovers an unsettling truth: pain is excruciatingly real, despite the creators' claims of a dampened pain response.He eventually finds himself trapped in prison, unable to log out, and demanding to be released from the program. Calls go unanswered, and the world of ninjas becomes a nightmare where hunger, thirst, hygiene, and even death are all real.Angered that he was deceived, he abandons all sense of logic and vows to become a villain no one would have ever anticipated.