The vanished knights, and the ancient castle twisted into another world

The radiant, glorious empire of Yurationus.
It was an age of peace, but a tragic incident occurred at a fortress on the empire’s frontier.
The lord of the castle went mad and summoned demons, countless people were sacrificed,
and news of the disaster finally reached the imperial capital.

The Divine King Lenas immediately dispatched four knights and their order,
the pride of the empire – but every one of them disappeared.
In the end, the last holy knight, Enoch, and the church sister, Rebecca,
set out to uncover the truth.
The time given to them is only 30 days…

Game Overview

You’ll dash through the castle, find hidden power-ups and items, and challenge powerful bosses – it sticks faithfully to the core formula of a classic Metroidvania.
The in-game 30 days are more than enough time. This game does not demand a frantic time attack.
The real core of the game is how you manage the changing risks and rewards as time passes.

A Castle with Two Faces: Day and Night

There are doors that open only during the day, and others that open only at night. They’re marked on the map, so try visiting them at the right time.

Sometimes, taking the risk of going out at night to look for shortcuts or farming souls to level up can actually pay off more in the long run.

But if you die, it’s all over!

While the sun is up, you can explore relatively safely. Use that time to expand your map and move around boldly.

Once it gets dark, stronger enemies begin to appear and the danger level rises. Return to your base quickly and get ready for tomorrow.

When complete darkness falls, an indescribable malice takes over the castle.

Changes by Date

As the days pass, every enemy lurking in the castle gradually grows stronger!
Not only do their appearances change – they may gain new abilities, and even their attack patterns can change.

Purify the Abandoned Chapels!

Rebecca can purify abandoned chapels and turn them into bases.
Until the purification is complete, you’ll have to protect Rebecca from the waves of enemies that keep coming!

Only by finding abandoned chapels and moving your base through purification can you explore deeper into the castle.
And once a chapel has been purified, you can use transport to warp there instantly.

Game Features

🏰 A Vast Gothic Castle

From corridors to underground waterways, spires, and otherworldly spaces—run through a castle that’s both beautiful and eerie, and discover hidden items and secret shortcuts.

📜 Story-Driven

Meet the missing knights and listen to their stories. You’ll follow the process of uncovering the truth behind the tragedy that occurred at this castle.

🌓 Changes Over Time

Plan out your day while looking at the map. Actively explore during the daytime, then return safely to your base at night and get ready for tomorrow.

⚔️ Five Unique Weapons

Obtain five distinct weapons, each with its own personality, and choose the one that fits your play style to upgrade and grow stronger.

✨ Collect Bibles and Stellastones

Gather Bibles and Stellastones scattered throughout the castle to unlock Enoch’s abilities and wield powerful holy magic.

😈 Challenging Boss Battles

Of course, no Metroidvania is complete without boss fights! Take on mighty bosses and savor the thrill of victory.

🛡️ Defense & Purification

Find abandoned chapels and purify them. A defense mode, where you must protect Sister Rebecca from demons attacking from all sides, adds even more tension.