Prologue: First Day Whispers
It’s a gray dawn at Hoshizora Academy, known for its strict rules—and silent ghosts. Hana Minami stands at the gate with a worn suitcase. She’s the new girl, transferred from a small town. Her only wish is to stay out of trouble and keep her strange ‘sight’ secret. Really, can you blame her? You wouldn’t want people knowing you can see things others can’t, would you?
Students are rushing around her, and some talk about a rumor: the tiny old bell in the North Tower. It’s said to toll at midnight, bringing regret to any student near it.
Meet the Lines Between
During homeroom, Hana tries not to make eye contact. She can see faint shapes clinging to desks and windows. Then, a cheeky boy with tired eyes, Daichi Konoe, plops down beside her. “You really see them, don’t you?” he whispers.
Did Hana just flinch? Of course. Why is a stranger asking such things? Turns out, Daichi is a ‘Mediator’—someone for whom shadows and whispers are daily life. “Come by the clubroom after class,” he says, grinning.
Strange Allies, Rules Broken
Hana follows Daichi to a drab clubroom filled with knots of incense, candles, and heater mugs. Three others are waiting: Akari Sato (quiet, older student scanning old spirit tomes), Yuto (skittish prankster, probably drank too much canned coffee last night), and the club president, Ryoko, stern with smart eyes.
Ryoko introduces the Paranormal Society: “This school’s full of memories. Not all wish to sleep.” Then Ryoko reveals tonight is Festival Night, when the bell marks ‘cracks’ between worlds at midnight.
“We’re not supposed to be in the tower,” Daichi says, smirking. “Want to help, or will you hide?”
The Forbidden Tower Climb
Faster than she expected, Hana decides. Who could ignore the pull of answers, anyway? She joins them that night. Rain taps lightly as they sneak to the North Tower, flashlights clipped to belt loops. Stale dust floats above each wooden stair. Around the landing, their world shifts: voices hum, objects seem heavier, something resists each step.
Do you think they should turn back? Daichi tries to crack jokes, but no one laughs now.
The Bell Tolls, Secrets Unbound
Akari peeks through the dim. She mutters old kanji, and the shadows flicker. Their flashlights dull as cold air presses in. They hear a scraping above—the bell rope moves on its own. Ryoko shouts for everyone to hold hands, or they’ll get lost. When midnight comes, the bell clangs: its cry seems both deaf and far too sharp.
Everything whooshes. When Hana opens her eyes, she stands not in the tower, but somewhere that echoes its shape—darker, vague, twisting. Footsteps sound. The others have changed, blurred, or faded. To find each other, they’ll need to face the spirits trapped here since the old academy burned sixty years back. 
Pasts, Fears, And The Path Forward
What is real in such a place? Hana stumbles into her own past—her mother’s last words, a lost friend. Are these things trying to stop her, or help her?
Ryoko faces a sorrowful woman, repeating the phrase “Don’t let them forget me.” Daichi, who hides easy pain with sharp jokes, can’t speak at all. Each team member must choose to act on trust or linger in past spite. If you could reach one old regret, would you?
Race Against The Chimes
The rules change in this in-between world. You run for yards, but end up in the same hall. Yuto almost gives up, but Hana draws their hands together. Suddenly, the bell glows—maybe her courage is a beacon, or maybe something out there waits for her choice.
A wall shifts. Before her, Hana sees a dying flame and recognizes old hope: the bell was not a curse, but put to warn others. Can she unlock the past’s wish?
Cliffhanger: The Rift Widens
Wind whips the group as the place trembles. A split appears, looking out onto what seems like their real world—now covered in grey rain, with staff searching the grounds. But as they run for the exit, hands reach from behind, snatching Daichi into the mist.
Hana reaches out but slips… Lights blur, sound vanishes, and now she’s on her own, not sure who or what comes next.
