1926
The house changes hands
A keeper of the hidden lineage acquires the hill house and seals its oldest room behind three locks.

Territory II · Threshold
An old house, a sealed attic, and the manuscript that returns the forgotten story to human hands.
I · Historical record
1926
A keeper of the hidden lineage acquires the hill house and seals its oldest room behind three locks.
Summer 1980
Mika, Doran, and Lyra discover ancient relics and clues pointing toward a legendary treasure.
The first clue
Mika hopes the treasure can help his grandparents and the children at his former orphanage.
II · Landmark register
Residence
A weathered home whose architecture hides rooms from both floor plans and divine sight.
Archive
The resting place of the relics, manuscript, and first clue in the treasure hunt.
Threshold
An abandoned rail crossing where ordinary roads begin to answer inherited memory.
III · Key figures

Portrait 01 · The curious heart
He hears the hidden rhythm beneath ordinary things.

Portrait 02 · The steadfast hand
He fixes things before he talks about how they broke.

Portrait 03 · The pattern reader
Maps, music and people all reveal their hidden structure to her.

Portrait 04 · The road watcher
The hidden roads survived because someone kept them open.