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"If another one of these first-years tells me that wisteria extract can be substituted with crushed morning glory petals to neutralize basic alkaloids, I swear to every ancestor in heaven, I am going to throw myself off the academy’s clock tower."
Shinobu dropped her red pen with a sharp clack, leaned back against the backrest of her desk chair, and pressed the heels of her palms hard against her eyelids.
The clock mounted on the wall of their shared apartment read a quarter past twelve. She had been grading Kimetsu Academy’s midterm chemistry and health science examinations for nearly four hours, and the strain was finally exacting its toll. The neat stacks of paper before her seemed to multiply every time she blinked. Class 1-A, Class 1-B, Class 1-C—she had gone through every sheet, parsing through frantic scrawls and Tanjiro’s overly polite three-paragraph apologetic essays written in the margins of question four.
"The clock tower is only two stories high," a rumbling voice spoke from the hallway behind her. "So you would not die even if you jumped. You would only sprain an ankle."
A pair of broad, warm hands came to rest upon her shoulders. Shinobu sighed, the bite of her irritation melting away almost instantly as long, calloused fingers dug into the knots on her neck. She tipped her head back, letting the dark crown of her hair brush against Giyuu Tomioka’s chest.
"Tomioka-san," she murmured, keeping her eyes shut. "Must you always be so literal?"
"Yes," Giyuu replied, utterly deadpan. His thumbs worked smooth, firm circles into the tense muscles at the base of her neck. "And the faculty deadline is not until next Friday. You have over a week. Why are you doing this to yourself tonight?"
"Because if I leave them sitting in the staff room, Rengoku-sensei will accidentally spill bento broth on them, or Shinazugawa-sensei will use them as scrap paper to write disciplinary warnings," she grumbled, tilting her head slightly to grant him better access to a particularly stubborn knot. "Besides, I loathe unfinished work hanging over my head. Look at this, Giyuu. There are seventy more to go. Did the entire freshman cohort decide to forgo studying entirely?"
Giyuu’s hands slid down to wrap around the front of her shoulders, leaning down until his chin rested lightly against the top of her head. He wore his faded navy loungewear, which smelled of cedar and clean soap. "The academy accepted more students this spring, so the classes are larger than before."
"Well, did every single one of them have to enroll in advanced biology?"
"I can grade the rest for you, Shinobu."
Shinobu swiveled her chair around to face him. "You? Grade chemistry examinations?"
Giyuu blinked down at her. "I can read. I know what an answer key looks like."
"You teach physical education, Tomioka-san!" Shinobu laughed. "You would look at a diagram of a benzene ring, think it was an uneven hexagon, and mark it wrong because it didn't do your twenty push-ups."
"I am not illiterate in the natural sciences," Giyuu said with a slight frown of offense. "I passed high school."
"Barely, if Tsutako-san’s stories about your youth are to be believed." She gave him that razor-sharp smile of hers—the one that usually terrified misbehaving sophomores into submission.
Giyuu let out a slow exhale, untangling his arms from her chair. "Very funny, Kocho-sensei."
She was about to pick her pen back up when his large, scarred hand closed firmly over hers, lifting her hand away from the desk. He took her other wrist with his free hand and gently pulled her up to her feet. Shinobu offered a small whine of protest, but her legs were stiff, and she allowed herself to be drawn forward until she was standing flush against his chest.
"Bed," Giyuu ordered softly.
"I have at least twelve more papers to—"
"Sofa," he amended, but still refused to budge. "You are taking a break. If you collapse from exhaustion tomorrow morning, I will have to carry you to the infirmary during second period. I don’t mind the gossip from the disciplinary committee, but I’m quite certain you do."
Shinobu rolled her eyes, but the fatigue in her bones was heavy, and Giyuu’s grip was warm—so warm. "Fine. You are so bossy when you pretend to have some authority over me."
"I am older than you."
"By a pitiful few years, which have clearly aged your tact far faster than your body."
Giyuu steered her toward the living room, guiding her down onto the low, comfortable couch. Shinobu sank into the cushions, letting out a breath she felt like she had been holding since seven that morning. She watched through heavy-lidded eyes as Giyuu walked over to their small kitchen nook.
He filled the iron kettle at the sink, set it upon the stove, and turned the burner on. His movements were slow, the same unyielding, calm rhythm associated with everything he did.
"You know," Shinobu called out, her voice slightly muffled as she pulled a woolen throw blanket over her shoulders, "the electric kettle boils water in two minutes. You don't need to use the cast-iron kettle at midnight."
Giyuu didn't turn around. "The cast iron retains heat better. And you like the sound of the steam."
Shinobu's lips parted, but she didn't refute him. Instead, she watched him open the upper cupboard and reach for a specific ceramic jar tucked behind the green tea tins.
A few minutes later, he took the whistling kettle off the flame just before it could let out a piercing shriek. He let the tea steep for precisely three minutes, then poured the fragrant brew into her favorite pale purple mug and carried it over to the low table before the sofa. He then sat beside her on the cushions, leaving just enough room that his shoulder pressed familiarly against hers.
Shinobu picked up the mug and took a sip. As the warmth bloomed down her throat, her taut muscles finally gave in, slumping backward against the sofa cushions.
"At least you didn't scald the leaves," she admitted. "Acceptable."
"Thanks for the high praise," Giyuu murmured, settling his arm along the back of the sofa behind her head.
Shinobu closed her eyes. It was strange, she thought, how chaotic the world outside these walls always felt.
At school, she was Kocho-sensei: brilliant, cheerful, sharp-tongued, managing a bunch of rowdy students, masking every hint of irritation beneath a bright smile.
Yet here, sitting beside this quiet, clumsy man whom half the faculty thought was entirely devoid of social grace, she didn't have to smile at all.
He knew things about her that no one else had ever bothered to see.
He knew that she needed reading glasses after sundown but stubbornly refused to wear them out of vanity.
He knew that she switched to icy, hyper-formal honorifics when she was furious.
He knew that her hands and feet were ice-cold even in the peak of July, and that she would sneak her toes against his calves in the middle of the night just to hear him grunt in surprise.
"Thank you," she whispered.
Giyuu shifted slightly. "For the tea?"
"For the tea," she said softly, opening her eyes to look into his.
Giyuu looked down at her, his dark blue eyes reflecting the warm amber light of the floor lamp. Shinobu tilted her face upward, her eyes fluttering shut as his lips met hers.
The exam papers sitting on the desk across the room suddenly felt such a distant, trivial thing.
Giyuu’s gaze drifted down to the empty mug on the table.
"Another cup?"
Shinobu smiled.
"Yes, please," she said softly. "Just one more."
Giyuu gave her one last kiss on the temple, then stood and walked back to the kitchen to fetch the kettle. Shinobu pulled the woolen blanket tighter around her shoulders, watching his broad back move beneath the soft light of the kitchen.
Outside, the wind brushed against the windowpanes, cold and relentless. But inside, enveloped in the steam of lavender and mint, Shinobu felt an absolute, unshakable stillness.
He was her shelter, her shore.
Her peace.