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Language:
English
Series:
Part 1 of Demo’s Mer Obsessions
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Published:
2024-03-31
Updated:
2026-02-19
Words:
136,768
Chapters:
55/?
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2,400
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Dark Blue Moon and the Suffering Sun

Summary:

One seeks to return home. The other runs away from home to escort him. Two boys from vastly different backgrounds must swim across the world. However, the vast oceans aren't the only things they must navigate. Between a complex political landscape above and beneath the sea, blood-thirsty government agents, conniving hunters, scheming kings and even their own parents, can these boys survive the journey, or will their own differences tear them apart?

In which Danny Fenton and Damian Wayne swim around the world, and find friends and family at the end of the road.

A story in 2 acts (so far!)

Act 1, The Pacific: Chapters 1-35
Act 2, The South: Chapters 36-Ongoing
Act 3: ...?

Notes:

super big thanks to BreKitten and Bucket of Randomness from the Batpham discord server, and Juno from the Haunting Heroes server, for all their help and inspiration, i wouldn't have found th emotivation to start without u

Big thanks to Sendryl, AgentIan and KarniaQueen for helping me revamp the summary!

Chapter 1: Act 1 The Pacific: The Drowning of Damian

Notes:

This story is crossposted on wattpad and tumblr!

Chapter Text

Distant search horns shook Danny's ear fins, but he kept his eyes on the sun over the horizon, where mountain peeks emerged. He had to move quickly. Danny thrust forth with all his fins and gripped the still, small body in his arms. Stupid rich kids and their stupid ignorance about Amity Island. Danny cut through the water, and didn't bother to slow down upon reaching the shore. Crashing and tumbling through the sand, Danny recovered in seconds, and sat up in his arms. The kid's shirt gave way to Danny's claws, and he pressed his palms upon the kid's chest, and pumped like his life depended on it.

This innocent kid's life did.

He, Sam and Tucker had trained for hours on mannequins and real people out in the field, but who knows how long Damian had been underwater, how long he had been calling for help. Salty seawater gurgled out of the kid's mouth, but no more movement was to be found. Danny pressed his lips upon Damian's and exhaled. He pressed down on Damian's chest with just enough strength to avoid cracking every rib. Kiss of life. Press. Press. Kiss of life.

Most people would've been woken up by now. The crashing waves and wind over the lifeless body roared like a death toll. Six months as Phantom, dozens of attacks, and Danny was able to save everyone, everyone. He had to.

His arms, trained and honed from hundreds of hours in the water, burned as if stabbed by hot knives. His body was beginning to dry off, pearlescent white scales fading into pink skin. Glasslike flesh filling and hiding away internal organs and bones. Fins receding into bone. Tail snapping into and bones resetting. A human teenage boy kneeled over a child, tears rolling down his eyes. Why wasn't it working?

A rib cracked thunderous, and Danny hesitated for a brief second, but Damian stirred not. Danny continued. He could barely see his own arms, couldn't tell if the rhythm was even right. Despite arms growing wearier and wearier, strained and more strained. How could he ever look anyone in the face again, knowing Damian was right here, right now, and yet-

crack, another rib broke. He had to keep going. So many people were counting on him, even if they didn't know it. From Sam's parent's gossip, this kid apparently had a dozen and a half siblings, and a father who'd already lost his own parents.

Danny collapsed on the sand, naked and shivering. His fingertips felt numb. His toes felt numb. His body felt numb and his heart felt like it was harpooned and his brain was erratically screaming into the walls of his skull. There was no denying, no more.

Even if- Even if he could magically restart Damian's heart, and get his lungs pumping again, there was no human on earth who would not suffer irrevocable brain damage. The kid would be a vegetable for his entire life.

Not like it matters.

Danny wrenched a sob. He grabbed a handful of sand and throw it into the ocean. He slammed his foot into a rock and didn't even care when it came back bloody.

How could he return to Amity now? And tell Bruce Wayne to his face what he let happen.

Danny fell to the sand, numb again. It was his death, his drowning. He vowed it would be the last one, the last in Amity, and now...

And now...

Danny shot up. He leaned over Damian's corpse. Lightning fired off in his mind, and new anxiety gripped him, but above all, hope.

"I'm sorry." He said.

Danny dipped his hand into a tide pool, letting scales and webbing over take it. He opened his claws, and and sank them into damian's arm. Blood seeped out and coated the white scales. Twisting the claws he carved out a chunk of human flesh, and brought it to his mouth. Danny swallowed it in one gulp.

Next, he brought the claws to his own shoulders. In as swift a motion and much shriller a pained scream, strings of fresh siren meat were produced.

"Please forgive me." Danny prayed, to whatever unfeeling god was listening. He opened Damian's move, and shoved the bloody strips down the hatch.

The effect was instantaneous. Danny had to work quickly. Painful memories tied up in a cave resurface. The urge to push them down was ignored; now they had to be studied. He tore off the remainder of Damian's clothing, and carried him closer to the water line. Green scales emerged from Damian's belly like blades unearthed from a long-forgotten battle. Danny sank his claws into the gaps of Damian's ribs and tore long gashes in them. The scales climbed up Damian's chest. Danny rolled the child's body on its side as they swept over his back. Bones cracked and snapped and broke, as spikes pushed out from underneath his spinal column, slimy thin webbing already connecting them.


Beneath, Damian's toes elongated as if stretched by a black hole. Bones shattered into dust underneath, all to be more malleable for the final product. The skin wasn't much better off either. As it stretched to its paper-thin limits and tore, more and more scales came forth to cover the damage.

Danny felt green in the gills. He couldn't bear the strain of those memories, and erupted with bile, hunched over. He couldn't bare to spectate as Damian twisted and bended like putty anymore. He'd already failed and violated the kid enough.

Danny dived into the water. The least he could do was make sure he didn't wake up hungry.