Sir President, Your Stamina is Amazing! - Chapter 15

In a peaceful, utopian Earth, a young man is born cursed by the will of the heavens. One day, he awakens… and uncovers the hidden world of the High Humans—the most powerful beings on the planet. His superpower? A rare support ability with healing powers… or is it? From that moment on, a healer who devours lives to grow stronger, just like the worst demons, is born. *** This is a story about superpowers in a distant future, where Earth hides unimaginable secrets. It’s also a journey across universes, filled with battles and discoveries. The protagonist isn’t a genius or a trained warrior. He’s just an ordinary man who faced dark times and watched his life be consumed by the abyss. But now, he has a chance to change everything. Step by step, he will learn why to fight—and how to survive.

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Martial Arts Grandmaster，who achieved the limit of human body, can fight a hundred foes alone as the founder of styles and schools. Yet, they could only reign supreme in ancient times. But the Immortals... Flying on the wind without relying on, they travel through the Azure Void, heading to the Northern Sea by dawn and reaching Cangwu Realm by dusk. Feeding on the wind and drinking the dew, transcending the mundane world, wandering freely with eternal life. That is humanity’s ultimate romance. Are Immortals fictional? Do they not exist in the real world? The outcome depends on the individual! The Martial Path was originally a defiance of the heavens, surpassing limits, turning the impossible into possible! So, what is wrong with desiring to become a Human Immortal, journeying to the Northern Sea Star by morning and reaching the Cangwu Realm by dusk? This is the story of someone in the modern world of martial arts who, armed with just a bit of informational advantage, ultimately became a Human Immortal and shattered stars with a single punch.