Chapter Text
Kamiyama High’s rooftop wasn’t supposed to be accessible. A heavy padlock clung to the rusting door handle, warning off anyone with even a trace of hesitation. But hesitation had never really suited Rui.
And Mizuki? Well, Mizuki went where Rui led, even when they didn’t admit it out loud.
The lock had been mysteriously “jammed” for months now.
Mizuki pushed the door open with their shoulder, the hinges groaning in complaint. The soft hum of the city spread out beyond them, rooftops stacked like uneven teeth, power lines lacing the sky, and the horizon bruised with late afternoon light. Warmth clung to the concrete from the sun, but the breeze had a bite — spring still dragging the last of winter behind it.
And there, predictably, was Rui.
He sat with one leg up on the rooftop railing, chin on his knee, eyes tilted skyward. A gust of wind tugged at his hair, and for a second, he looked like he belonged to some other world entirely. Somewhere untouchable.
Mizuki stopped for a moment, the air catching in their throat.
Then: “If you fall off that thing, I’m not visiting you in the hospital.”
Rui turned slightly, not startled. He never was. A smile played at his lips.
“You’d miss me,” he said.
“I’d miss the drama,” Mizuki shot back, stepping out onto the roof. “Not the clean-up.”
Rui chuckled, dismounting the railing with lazy grace. “You’re early.”
“You told me to come after class. You didn’t say I had to be fashionably late.”
“I didn’t want to keep you waiting.”
Mizuki raised a brow. “Since when do you care about that?”
Rui didn’t answer right away. Instead, he stepped toward them, then stopped—arms loosely folded behind his back, the way he always stood when he was hiding something. Mizuki noticed, of course. They always noticed. Rui could build entire mechanical stages out of scraps, but he was hopeless at disguising his tells.
“What?” they asked, suspicious now.
Rui smiled. “I got you something.”
Mizuki blinked. “What, like a present?”
He nodded and brought his hands forward. A small box rested in his palms — wrapped in violet paper, tied with a silver ribbon.
“Thought of you when I saw it,” he said simply.
Mizuki stared at the box. Their fingers twitched, and not from surprise — Rui had given them things before. Trinkets from his workshops, sketches, folded paper flowers. But this… this was different. There was care in the wrapping. Deliberateness. Like it had weight beyond the object inside.
They reached for it slowly, brushing his fingers.
The contact was brief.
But it stayed.
“You’re being suspiciously sweet,” Mizuki said.
“I can stop, if it makes you uncomfortable.”
“…No. Just — don’t go overboard, okay?”
Rui tilted his head. “Would it bother you?”
“I didn’t say that.” Mizuki looked down at the box again. “Can I open it?”
“Please do.”
Mizuki sat on the low wall edging the rooftop and carefully pulled the ribbon loose. The paper folded away with soft crackles. Inside, nestled on pale velvet, was a silver pendant. A crescent moon, slim and elegant, with a tiny star dangling inside its curve. The chain looked delicate but strong, just like — well.
Just like Mizuki.
“Oh,” they said. Just that.
Rui stood still, watching.
“This is…”
“You like it?”
Mizuki ran a thumb over the crescent. “It’s beautiful.”
“I thought it suited you.”
Mizuki’s mouth quirked. “Because I’m ethereal and glowing?”
“Because you’re constant,” Rui said. “Even when you think you’re not.”
Mizuki looked up at him then, startled.
Rui didn’t flinch.
Sometimes Rui said things that stuck. That peeled something open, just for a second. And Mizuki — well, they hated it. And they loved it. They loved him.
But they couldn’t say that.
Not now.
Not when things were balanced so delicately between them. When they didn’t know if saying it would send everything crashing down.
“Help me put it on?” Mizuki asked, quiet.
Rui’s fingers trembled when he took the necklace, though only slightly. Mizuki turned, sweeping their hair aside. The breeze was stronger now. Or maybe it only felt that way.
Rui’s hands were gentle as he clasped it at the back of their neck. The chain was cool against their skin. His fingers lingered for a heartbeat, brushing Mizuki's neck a little.
Mizuki closed their eyes.
In another world, maybe this would be the moment. Maybe they’d lean back. Maybe Rui would lean forward. Maybe something would snap loose.
But this wasn’t another world.
And the moment passed.
“There,” Rui said, stepping back. “Perfect.”
Mizuki turned, letting the pendant settle against their chest. “You’re dangerously smooth when you try.”
“I’m always smooth,” he said.
“You’re not.”
“Am I not?”
Mizuki laughed, short and breathy. “Don’t push your luck.”
Rui smiled again—his real one, small and fleeting.
For a few minutes, silence stretched between them. The wind tugged at their sleeves. The world below buzzed on, unaware.
Finally, Rui spoke again. “You know, sometimes I think we live in parentheses.”
Mizuki glanced at him. “What do you mean?”
“Everything we say—everything we don’t—it’s like it exists between lines. Like we’re always on the edge of something but never quite stepping over.”
Mizuki’s hands curled against the rooftop’s edge.
“We could,” Rui added, voice lower now. “Step over.”
Mizuki didn’t answer.
They didn’t trust themselves to.
Rui turned toward them. His eyes were sharp and soft all at once—like he was trying to read the thoughts Mizuki had spent months keeping quiet.
“We could,” he repeated.
Mizuki stared down at the pendant, heart hammering. “You don’t get to say things like that.”
“Why not?”
“Because you’ll make me believe it.”
Rui looked at them, and in that look was every unspoken thing they’d left between them. It ached. It burned.
“I don’t want to ruin this,” Mizuki said suddenly.
“I know.”
“We’re good like this. Right?”
Rui didn’t nod. Didn’t move. “Are we?”
Mizuki’s throat tightened. “If we say it — whatever it is — things won’t go back.”
“No,” Rui agreed.
“I don’t want to lose this.”
“Me neither.”
So they didn’t say it.
They didn’t lean in. Didn’t kiss. Didn’t ask, Do you feel the same way I do, and have you for months now, and are we both too afraid to admit that the answer is yes?
Instead, Mizuki stood. The pendant caught the light.
“I should get going,” they said.
“Yeah.”
Rui didn’t try to stop them.
But as Mizuki reached the door, they turned back.
“Thank you,” they said. “For the gift.”
“It’s yours,” Rui replied. “Always.”
And Mizuki, whose heart had no room left for pretend, smiled like they weren’t falling apart inside.
They left the rooftop with Rui behind them, and the chain around their neck pulled just slightly as they walked — as if it wanted to stay where he was.
As if a part of them already had