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Black Omens / Shores of Ashen Tides

A covenant with the sea.

A rescue mission becomes an investigation into a covenant that has survived for generations.

The search for Shunka

Idate Kōhei travels to Nagisa after his wife, Shunka, disappears while investigating reports of cult activity.

The village he finds is ruled by the Cult of Shiobo-gami, whose rituals promise calm waters and abundant harvests in exchange for human sacrifice.

As storms close around the coastline and the village prepares another Daughter’s Return, Kōhei must find Shunka before she becomes part of Nagisa’s covenant with the sea.

A story that stands alone.

Shores of Ashen Tides connects to the wider Black Omens universe while remaining accessible as a standalone story. What happens in Nagisa reveals events that later shape Idate Chiyo’s life.

06 / Bound by more than blood

Two lives. One dark tide.

Portrait concept of Idate Kōhei, a military scout wearing a straw mantle
Development concept art · Subject to change

Main protagonist / 伊達 黄平

Idate Kōhei

A disciplined military scout whose strengths lie in observation, survival and battlefield judgement rather than overwhelming strength.

When Shunka disappears while investigating cult activity around Nagisa, Kōhei follows.

His training prepared him for human enemies.
Nagisa is something else.

Idate Kōhei · character turnaround
Idate Kōhei · character turnaroundDevelopment artwork · Subject to change
Character and facial expression concept sheet for Tachibana Shunka
Development concept art · Subject to change

Supporting protagonist / 立花 瞬花

Tachibana Shunka

Shunka is an experienced investigator with an unusual sensitivity to the thoughts and presence of others.

Her disappearance brings Kōhei to Nagisa, but her connection to the village runs deeper than either of them understands.

Tachibana Shunka · portrait studies
Tachibana Shunka · portrait studiesDevelopment artwork · Subject to change

From the art desk

The people behind the story.

Idate Kōhei · costume explorations
Idate Kōhei · costume explorationsDevelopment artwork · Subject to change
Tachibana Shunka · character development
Tachibana Shunka · character developmentDevelopment artwork · Subject to change
Idate Kōhei · full character concept
Idate Kōhei · full character conceptDevelopment artwork · Subject to change
Village character study
Village character studyDevelopment artwork · Subject to change

05 / The faith beneath the water

Mother of the Tides

Shiobo-gami

The cult’s oldest stories tell of a mother who walked into the sea during famine so her village might live.

The next morning the waters returned full of fish.
The villagers believed she had not died.
She had become the sea.

To her followers, Shiobo-gami represents nourishment and oblivion — the tide that gives and the tide that takes back.

AI-generated concept illustration: an abandoned wooden shrine in a sea cave, with shallow tidal water and candlelit offerings.
Where devotion meets the tide.AI-generated concept illustration · Not gameplay footage

Stay close to the shore

Follow the tide.

Development updates, trailers and major announcements
from Revo Interactive Studios.

In development / Target Release: 2028