Eclipse Zero: The One Who Kept Walking

A single solar eclipse stole everything.
One moment, Kazuki Ito was an ordinary boy from Earth. The next, he awakens in Aerith—a world ruled by mana, noble families, and monsters born from shadows.

There is no way home.

No one waiting for him.

And according to the world's ranking system, he is the weakest existence possible.

Index VII.

As if fate wasn't cruel enough, a pitch-black interface appears before him.
The Eclipse System.

Unlike the legends, it isn't a kind guide that grants endless power. It offers no comfort, no mercy, and no miracles. It forces impossible lessons, punishes failure without hesitation, and nearly kills Kazuki more than once. Sometimes, surviving the punishment is the only reward.

Friends die.

Hope fades.

Every lesson demands another sacrifice.

When Kazuki finally reaches his breaking point after losing the people who gave him warmth in an unfamiliar world, the System grants him a single ability:

Dimensional Inventory.

A simple spatial storage ability.

Nothing flashy.

Nothing overpowered.

Yet in the hands of someone who refuses to give up, it slowly becomes a weapon unlike any other.

Kazuki doesn't grow stronger because the System hands him power.

He grows stronger because he learns...

...because he adapts...

...because every mistake is paid for with blood.

As he searches for a way to repair the only remaining connection to Earth—his broken phone—Kazuki begins uncovering impossible truths. Cities share familiar names. Strangers resemble the family he lost. A twenty-year-old solar eclipse changed this world's history... just as another eclipse brought him here.

Coincidence?

Or something far darker?

The deeper he digs, the clearer one truth becomes:

Aerith, Earth, the Eclipse System... and his arrival were never accidents.

They are pieces of a mystery that has been unfolding for decades.

And Kazuki is standing at its center.

Some people are chosen to become heroes.

Kazuki was chosen to become a lesson.