Labyrinth of The Mind – The Sable Bloom Arc
Shin Oda walks the dusk-backed streets of Ashihara City. Since childhood, he’s felt he doesn’t quite belong in this place where every day (and every heart) seems set by rules he can’t understand. Three blocks from his home, glow sticks line the edge of a broken fence. He knows what waits beyond: the famous institute, velvety on the outside, sharp as glass on the inside. It carries secrets. They’ve always whispered to him. Does quiet curiosity sometimes pull you to places you shouldn’t go?
For most of his life, Shin was trapped by dreams: faces stitched with strange wires, birds with cold black eyes, voices echoing through wet, moon-bright halls. When his best friend Ko Hajime told him he lost a week last year—no memory, just blank terror—Shin didn’t laugh. He didn’t ask how. He decided to reverse the shadow and go deep.
Tani Eiko, daughter of renowned researcher Kaede Tani, shows up the next day. She looks calm. But her left hand shakes as she hides a opening in the institute’s tall brick wall. Together with Ko and Eiko, Shin slips inside that night. What drives a heart to risk so much?
The new wing keeps to itself. Blue-lit windows, faint sound. In one room, lights flicker. Electronic notes sing beneath flesh-metal tables. Shin glimpses a cage at the far end. There, hoses dangle, red and yellow. Flasks bubble.
“Read these,” Eiko whispers, handing him faded files. His eyes widen as faded words tell one name again and again: the Sable Bloom Project. He reads about experiments on memory, dreams, even fear. The notes don’t say what happened—only results: “Subject recalls full week, animus extinction, failed staged empathy.” How does losing pieces of time change you?
Shin hears humming from the next room. Ko circles a glass door marked ‘4C’. Eiko’s face blanches under quick shadows. On a table, someone’s slumped by restraints: Hagashima the janitor, ash-streaked face still, thin lips blue.

Suddenly, footsteps. Emergency alarms slip low, then high. “We can’t hide forever!” Eiko gasps. Sirens wake in the hall. They dodge through pipe rooms, pass near a tank marked CODE SABLE: thick roots float, veins gold-green, pulsing to the slow beat of a machine.
One voice calls loud, “Did that door just close?” They duck lower. Quick breath, tense hearts. Ko grabs Shin’s arm. “Did you read what’s at the bottom? Who signed those, Shin?” A fleeting moment. The signature is familiar: Kaede Tani.
Eiko clutches her jacket. “My mother said she worked late, but not for these people. Not for ‘plants that eat blood’, or mindless caretakers washing away minds, or-–” She stops herself. “We need to find out what’s next. With proof.” Do lies or love run deeper in the dark halls?
The group makes for the archives. Doors there are off-color—orange mottled by gray. On a row of shelves he finds digital tapes. Titles: ‘Compassion Test: Day 0’ ‘Animus Integration’ ‘SB 03 – Critical Failure’. Ko starts the oldest one: there’s only static, a faint whimper, and a jagged outline that moves like dying wind. Did these tapes ever help somebody, or only deepen wounds nobody feels anymore?
Sirens blare above—a cut, sharp hiss. The wall vibrates. Someone’s unlocked the east stairwell. Guards’ boots pound. Eiko drops her phone. Rang out from beneath shelves, it blinks a message: Project florentia resumes 04/16. Be at the transfer point—don’t be late. She looks at Shin. “That’s tomorrow.” Her breath is ragged. Her mother isn’t just involved, she’s leading what’s next. What would you do, knowing she might be lost or hiding, a stranger in a warm easy mask?
In the dash for the back lab, Ko pills aside dusty fabric from a broken window. They climb out. Three jump, skin torn by corners. Light outside is less kind than last night—cold and tinged purple. Shin looks back at the high fence. The words “Sable Bloom—Extinction is Renewal” hang painted above the institute’s door like a fever dream he can’t blink away.

They don’t talk until they’re safe in Eiko’s small upstairs room. She pushes drawings across the floor: sick roots, dark hybrid things. At the top: a scribble of a girl held up with arms that are roots, mouth open wide, smile forced in place, weeping petals.
Ko’s fists clench on his knees. “People will keep getting lost in there. Tomorrow, your mom’s leading new tests. Are you telling or running?” Shin looks at Eiko. She tilts her head, eyes glass-bright.“If she began this, maybe she’s the only one who can stop it.” Shadows wobble between them. Unspoken words: betrayal, or a last try at saving what’s loved?
Outside, the sirens stop. Night gets wider. Shin turns. “We start with answers. Find her, show what they’ve done, and end the project, no matter what lies they painted over it.” Next to the door, Eiko places keys on the sill. “I’m in.”
Ko pulls a battered book from his pack. Maps. Back ways in, code names, times from old reports. They’ve got one night and only ghosts for hope. Jingling keys, numb hope, and half-dangerous bonds. As rain hits the windows, we see through a blurry view—they set out in dark, ready or not.
The screen swings up to the institute in eerie calm before dawn. We see Dr. Kaede Tani as she rewrites her signature, a vase nearby holds a real Sable Bloom—black petals, amber cores. Does she feel regret still, or only cold pride? End arc with her staring into a locked, steel tank—the one they saw last night—while monitors blink on behind, casting her in piercing smart white light. Is fate already fixed, or will Shin, Eiko, and Ko find a way in time?

Roll credits as a jazz-noir theme capstones this episode. Who’s really experimented on: the inner ghost or the one left walking this twisted maze?