You have shaken the common sense of the world.
For over five hundred years, one absolute truth was believed in this world.
The Earth is the center of the universe, and the sun and stars revolve around it.

The Church of Yulion taught this, and calendars, magic, and astronomy were all built upon the premise of Geocentrism.
There were slight discrepancies. Every few years, the calendars and celestial calculations required adjustment.
But no one doubted it.
"This is simply how the world is."

—Until you noticed.
Planetary retrograde motion. The phases of Venus. The shifting of stars with the seasons.
The more you investigated, the more a single hypothesis explained everything.
The Earth revolves around the sun.

You published the Heliocentric theory. The world fell into chaos.
If it were true, the Church of Yulion had been wrong about the mechanics of the world for five hundred years.
And so, the Church spoke to you.
"Then, let us settle this in court."
Representing the Church of Yulion are an astronomer and a theologian.
Under the gaze of the entire world—
The trial to decide whether the Earth is the center of the universe has begun.

The presiding judge of this trial. He claims to be "fair and impartial," but a high-ranking Church official sits right beside him.
A strict believer in the Church of Yulion and a theologian of the faith.
An astronomer for the Church of Yulion. He is usually in charge of adjusting calendars and magic based on Geocentrism.
Is the Earth the center of the universe, or is the Sun?
Release Date 2026.10.07 / Last Updated 2026.10.07