Reincarnated into Another World as a Heartless Warrior
Kirishima was living a normal life on Earth, but he was bored with it. He just went to work, ate, slept, and watched anime, and the cycle repeated every day. One day, while walking on the street, he saw a little boy in the pedestrian lane chasing a balloon, but a truck was approaching. Kirishima ran to save the boy, managing to get him out of the way, but he was the one who got hit by the truck instead, and he died. However, after that, he woke up and saw a man holding him. Curious about what had happened, he noticed a blue screen appear in front of him. Just as he had suspected, he had been reincarnated into another world where magic exists. He had no memory of how he got there, but he tried to adapt to this new world.
As he grew up in this world, he discovered his skills and became strong, realizing that he came from a powerful bloodline. He inherited it from his father, whose family was one of the strongest in their city. Eventually, he became a respected leader in his city. He also had a comrade called Executioner, a fierce teammate who, like him, showed no mercy to their enemies.
One day, while fighting alone in a forest, he met a white-haired girl who changed him. After that, when he returned to his country, he was different—kinder and more compassionate. However, three years later, he learned that the girl he loved had been killed by their enemy. This loss caused him to return to his merciless ways and even grow stronger than before, ultimately becoming the strongest.