MTL - Plane Development Plan - Chapter 1 cross over to be a wanderer

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

September 9th, 2023. A large black sphere manifested in the skies above all across the world.

No one knows how it happened or the underlying causes of it, but one thing is certain: it marked the beginning of the end.

One by one, human's began to awaken supernatural abilities, a new source of energy had come into existence on earth.

People's bodies became catalysts for this newly discovered energy, especially those who awoke these abilities.

Unfortunately for the Human's, it wasn't just their faction which was awakening these abilities.

The Vampires to awakened. Feeling threatened by the new power that the humans would have whilst also feeling confident in the new strengths of their own... The vampire's decided to wage war on the humans.

Our protagonist, Xavier Trigger, a young college student, was one of the many civilians who were caught in the middle of this war completely unaware of what was going on.

[You have died.]

An inexplainable notification message occupied the entirety of “MC's” vision

[Skill: Rewind has activated.]

'What's... Happening to me...?'

[Level 1: Return.]

“Hah... Hah... Hah...” He panted heavily as his eyes drifted open.

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.

A striking man of mysterious origin and peerless talent, he looks back at the world, in all its entirety, with utter disdain. And yet, in the treacherous and unpredictable ultimate formation of the Boundless Secular World, he guards a breathtaking ancient qin with broken strings, waiting silently for the destined one to arrive!