Yume Kazuki always loved the way the river near her house shone at sunset. She didn't think dreams floating downstream could ever draw her in. Here's the truth: the night her shadow moved without her, she stepped right into a link between the world she knew and the spirit realms.
Who would expect to find a boy with silver hair, playing a flute on rocks above the mist? His name was Sen, a guide for lost travelers who wandered into these ghostly lands. “Are you searching, or fleeing?” Sen asked Yume.
“Don't know yet,” she said. She wondered if this glimmer between sky and water held answers for her lost brother. Every old tale in town whispered you could reach souls past the veil with the right promise.
With Sen's help, she forded memories that flowed like water—the childish voice of her brother, the day he vanished. Lotus lights circled her feet, bright when the truth felt near, dimming with fear.
Meet the rest: Keiji, a fox spirit—sly, scared of loud sounds, sharp when needed. Hana, a shy girl in a faded kimono who could read the wind for signs of old magic. Do you think you'd trust creatures whose moods ran storm to sun, in a world built from wishes and pain?
Conflict grew from a wound in the river itself. Someone, or something, called shadows to creep out from the bends. Why did the echoes know Yume's name? And why did Sen hide a sadness so deep even the river forgot to tell?
Their group pressed upstream. Hana pointed out creeping mist—“If you stray, you lose yourself twice over here,” she said. “Like closing your eyes and forgetting who you are.” What would you hold onto if your own heart started to fade?
Dream shapes rose, splitting wild around the team. One block was lined with weeping willows, branches swirling into archways. Another knelt under red lanterns swinging above ghost boats. Keiji darted close to Yume. “Smells like trouble. Snuff your luck, they might snuff you too.” How would you face black luck stacked above ghost water?
Yume learned fast how to tell a true vision from tricks. She saw a child along the bank, muddy hands reaching—not her brother, just grief given shape. Do you still check every shadow for someone you love and lost?
At a crossroads, Sen refused to go farther. He clenched his flute. “I made a vow. Guides don't cross the Hollow.” But Yume stepped across alone because some goodbyes don't let you back away.
In the Hollow curve, memories fought with dreams. Her brother's laughter became a lure. In a quick second, the world blinked—traded sun for green shadow. Keiji and Hana ran back but were blocked by the river's odd rules. Sen was gone from view.
Yume grabbed the thread of one old song their mother sang—she hummed it softly, the sound weaving with warm gold light. The pull of the spirit realm tried to split her apart. Could a lost song bridge this gap?
With every wave, pieces of her fell, till she only clung to the memory of her brother’s smile. He called: “I’m here.” Was it illusion, or something more?
Keiji broke every spirit rule, crossing into the Hollow after Yume.
“Sorry, kid,” he said, his voice rough. “I owe you a favor. But don’t make it a habit.” Together, they pressed on through moving shapes and winding wind.
Hana, outside the Hollow, searched for a way in. She found Sen sharpening his flute against stone.
“Did you send her in to leave her?” Hana accused.
Sen’s eyes glinted.
“I can only help so much,” he answered, “but if you break fate, expect a price.”
Would you risk drawing new lines between kindness and loss when rules run deep like roots?
In the half-light, Yume and Keiji spotted an altar lit by blue flame. Her brother’s voice flickered in the flame—calling, pleading. Yume reached out but faltered. One whisper from Keiji: “Don’t let what you want pull you off the path.” 
River winds whipped up, scattering words like petals. The price to wake a lost soul was pain—the past played over each mistake like an old wound torn open. But isn’t that what hope drives us to face, even if it stings?
Hana and Sen called from the edge. Their voices warped, barely heard. Signs of the shadow-twisted spirit—a leash of ragged darkness—slipped into the Hollow, and all at once, time frayed. Did this thing guard wishes from reaching the ones who sought them?
What would you choose if the only way to return was to give up a memory that defined you? And if getting what you wanted could undo someone else’s peace—what’s the line between rescue and letting go?
Folklore spoke of deals at such crossings; they circled like weak fish around Yume’s limbs. The episode ends with her hand halfway to the blue fire. As she closes her eyes and calls her brother’s name—echoes answer, and the cliffhanger cuts sharp as the altar’s light surges. 
Would you pay the river’s price?
