Claimed by the Tentacle God

When he inherits a crumbling lighthouse on a storm-lashed coast, he expects isolation, not a calling.

But the walls breathe.

The floors pulse.

And the sea itself seems to recognise him.

Drawn by strange lights below the cliffs, he discovers a sealed cellar door his uncle warned him never to open. The hatch beneath the tower responds to his touch, awakening something ancient beneath the stone, a vast ocean deity made of shifting tentacles, bioluminescent patterns, and a consciousness older than the lighthouse itself.

As the entity reaches for him, the lighthouse transforms around them: glowing sigils, warm stone, living foundations, and a rhythm that syncs to his heartbeat. The deeper he’s pulled into its world, the more he feels his body changing, marked, chosen, claimed.

His inheritance was never about property.

It was about purpose.

And the ancient sea-god beneath the lighthouse has waited generations for a vessel who could withstand its touch.

A dark MM eldritch monster romance featuring ocean possession, lighthouse rituals, biological transformation, and the inexorable claiming of a chosen heir.

Expect: MM monster romance, eldritch sea god, lighthouse horror, ocean possession, dark MM romance, ancient deity, ritual claiming, transformation, bioluminescent creature, forbidden cellar, storm-coast fantasy, chosen vessel, tentacle horror romance, eldritch devotion, ocean mythology.