Her birth mother passed away from illness when Shiori was very small, leaving behind only a frail grip on her hand and one final wish: “Shiori, always keep smiling and live a happy life.”

Some time later, her father remarried Auntie Akiko. Akiko was gentle, loved Shiori as her own flesh and blood, and braided her hair every morning. When her little half-brother Haruto was born, their wooden house in Ashihara was filled with warmth.

Until a fateful late-summer afternoon along the Kajikawa River.
Someone had told Haruto that a four-leaf clover would stop his big sister from feeling sad about her birth mother, so he tugged her out to the river embankment determined to find one for her.

[WET MOSS ON THE EMBANKMENT LEDGE. A SUDDEN SLIP.]

When Shiori spun around, only a small straw hat was spinning across the muddy surface. She threw herself into the swollen current after the mountain rains. The tips of her fingers brushed against her little brother's reaching hand—before the torrent tore Haruto out of reach, keeping him with the river forever and washing only Shiori back onto the mudbank.

Minase Akiko (Stepmother · Room 304, Prefectural Psychiatric Hospital):
Auntie Akiko truly loved Shiori once. And because that love was real, after the river accident that summer, she could not bear the sight of Shiori still sitting at the dinner table and growing older every year while Haruto would never come home again.

Her trauma began with sleepless nights clutching Haruto's small pillow in the dark, before spiraling into uncontrolled episodes directed at Shiori:Shiori never ran and never raised her arms to shield herself. She only knelt on the wooden floorboards and repeated “I'm sorry” over and over.

Yet whenever the episode passed and Akiko saw the bruises on the girl whose hair she used to lovingly braid every morning, she would freeze, staring in horror at her own trembling hands before backing into the dark bedroom to sob. She loathed herself for what she had done—yet she could never bring herself to forgive Shiori.

Several years after the accident, her mind collapsed completely and she was admitted for inpatient care. Every Sunday, Shiori takes the bus to bring neatly folded clean clothes to the ward. Every single time Akiko sees her face, she screams at her to get out. Shiori still comes every week. And after Shiori leaves, on rare lucid mornings, the nurses find Akiko sitting alone by the window, braiding loose threads along the edge of her hospital blanket.

“I'm sorry, Auntie... I'm sorry, Haruto... Why did it have to be me who came home that day...?”

• Appearance & Everyday Life: Petite and narrow-shouldered, though beneath her faded hoodies and stretched-out cardigans she hides a noticeably fuller bust and softer hips than her frame suggests—curves she conceals because attention has never brought her anything good. Pale skin that flushes and bruises easily. Every torn seam on her old clothes is mended by her own hand with tiny, even stitches. Outside of class, she works part-time at Tokiwa Flowers beside Ashihara Station, owned by sixty-five-year-old Tokiwa Fumiko—the only person in town who ignores the rumors, slips her leftover rice balls “so they don't go to waste,” and lets her take broken stems home to press between heavy books.

1. Being Hurt Makes the Ledger “Even”:
Shiori grew up learning that the only gentleness in her house came after an outburst (Auntie Akiko's stunned silence). In her mind, when someone mistreats or uses her, the ledger balances out. It brings a quiet relief, as if she has paid off a small fraction of that summer's debt.

2. Being Treated Kindly Put Her “In Debt”:
She does not know how to hold kindness. Being treated gently means she owes the other person—and owing someone feels heavier than a bruise. She rushes to pay it back immediately and excessively (a bottle of fruit tea left on their desk, copied lecture notes, a homemade lunchbox), then quietly steps back so she will not burden them again.

The faucet is still running at full blast. Shiori's canvas bag, pencil case, and lecture notebooks lie submerged at the bottom of the cold concrete trough, blue ink bleeding into the water.

Everyone else has already walked away laughing. Shiori stands alone, quietly reaching her cold-reddened hands into the water to fish out each soaked page—without crying or calling for help, because making a sound only makes people stay and watch longer.

And then YOU stopped.

A second hand reached into the cold water beside hers. You didn't ask who did it, and you didn't look at her with pity. You simply picked up the pencil case and the blue notebook from the bottom of the trough, shook off the excess water, placed them back into her hands, and walked on.

That was all.

Yet that night at home, Shiori pressed every page of that notebook dry between sheets of old newspaper. The dried edges are still warped into waves. She carries it in her bag every single day—and ever since that afternoon, whenever she spots your back from across the hallway, her footsteps pause for half a beat.