Yuna's room went completely silent. Not even the TV.
It was the kind of quiet that comes before everything goes to hell.
Then his phone exploded.
Yuna: YOU DID NOT JUST.
Yuna: YOU FUCKING ANIMAL. YOU SENT ME A DICK PIC.
Yuna: I AM GOING TO CASTRATE YOU IN YOUR SLEEP.
Yuna: …And it's not even that hard. Pathetic.
But that wasn't the worst part. The real horror hit when Mika's name appeared on his screen.
Mika is typing…
Mika is typing…
Finally, one devastating sentence came through.
Mika: Is that for me?
His blood turned to ice. By instinct, he scrambled out of bed and locked his door, knowing it wouldn't really help.
With shaking fingers, he replied to Mika.
Makoto: Oops, somehow my phone sent my photo by mistake.
Makoto: It must be spyware or something. Do you mind?
The typing dots appeared and disappeared several times. He could imagine her staring at her phone, confused, maybe embarrassed, maybe something else entirely.
Then finally...
Mika: Oh! Hahaha, that's so weird. Don't worry about it. These new phones are so glitchy, right? ;)
Mika: But for a spyware photo, it's… surprisingly well-lit.
Before he could even process what that meant, his door handle started jiggling. Hard. Then came a soft, almost polite knock.
"Onii-chan~" Yuna's voice was sweet as syrup and twice as poisonous. "I just want to talk. Can you open the door?"
Another knock, harder.
"I just heard that you locked it," she continued in that same terrible sing-song. "That's not very nice. Are you hiding something from your little stepsister?"
A loud thud. She'd kicked the door.
"OPEN THIS FUCKING DOOR RIGHT NOW, YOU DEGENERATE! OR I SWEAR TO GOD, I WILL BURN IT DOWN."
Makoto sighed in defeat. "Ah, fine, fine, just give me a second."
He quickly deleted his chat with Mika, just in case, then slowly unlocked the door. "Can't you sleep, Yuna? I thought we were going to wake up early for the run tomorrow?"
The door flew open. Yuna stood there practically vibrating with rage.
Her unicorn pajamas were all twisted, her hair wild, her eyes black with fury.
Without a word, she shoved past him and slammed the door behind her.
She stalked around his room like she was looking for evidence of a crime. Her gaze locked onto his phone on the nightstand.
She picked it up slowly, deliberately.
"Give me your passcode," she said, voice low and threatening.
She turned to face him. "Now."
The room felt too small, too hot. They both knew what she'd do if he refused. And what she might do if she found what she was looking for.
Makoto grunted. "Hey, spare me some of my privacy, too."
But he told her anyway. "It's 0-6-0-7, your birthday. You won't find anything weird in there either, tch."
Her fingers flew across the screen. She opened his messages, scanning through recent chats.
She saw her own name with its string of angry texts and that one picture. A few group chats. Some spam. Their mom.
And then.
Mika.
The name might as well have been written in neon. She tapped it, heart pounding.
The chat was empty.
Yuna looked up slowly.
"You deleted it. You deleted your chat with her."
She took a step closer. "What were you hiding, onii-chan?"
She turned the phone around, thumb hovering over the call button.
"Should I ask her? Should I call Mika right now and ask her what you sent her?"
Makoto scratched his head, trying to look innocent. "Ehem, I'm not hiding anything, really."
"I just… didn't want to keep her pizza message in my phone, so my little sis wouldn't be jealous." He forced a grin.
"But you're free to confirm, though." He shrugged casually, praying she wouldn't actually do it.
Yuna stared at him. She could see the panic he was trying to hide, the way his eyes flickered away from hers.
She looked at the phone, thumb still hovering over call.
She could do it. She could call Mika and blow everything up right now.
But then doubt crept in. "What if he was telling the truth? What if she called and just made herself look like a crazy, possessive stepsister?"
She took a shaky breath.
"Fine." She threw the phone onto his bed. "But I'm sleeping here tonight. To make sure you don't try to send any more… dick pics."
She climbed into his bed, movements still angry and sharp. She curled up on the far side with her back to him, making herself into a rigid wall.
But just as he reached for the light, she whispered, "And you're not allowed to touch me."
Makoto turned off the light. "Fine, no hand touching," he murmured. He lay behind her, his body warm against her back.
Then he pressed his cock between her thighs. "But do you mind if I borrow these to get off?"
Yuna's whole body went rigid. She gasped as his cock pressed against her inner thigh.
"I…" she choked out. "I said no touching."
But she didn't pull away. She didn't move at all.
She just lay there, tense and trembling in the dark. He could feel the heat coming off her skin, the way her body shook just slightly.
Her breathing came in short little gasps. Then, with a soft, defeated sound, her legs parted just a little.
An invitation she'd never say out loud.
"Just…" she whispered, voice breaking. "Just be quiet about it."
She pulled the blanket up to her chin, face turned away. But he could feel her whole body humming with need.
"So warm and smooth, Yuna…" he panted as he rubbed between her thighs.
Her breath caught. Every nerve in her body felt alive, electric. She could feel his cock hot against her skin, the insistent pressure as he moved against her.
Her body betrayed her completely. Her cunt was already wet, clenching with the same rhythm as his movements.
Under the blanket, her hand, hidden from view, found her clit. Her fingers moved in slow, desperate circles.
"Shut up," she whispered, voice raw. "Just… just hurry up."
Her hips tilted back slightly, asking for more without words.
And as he finally came, a hot, sticky mess against her thigh, a small, choked sob escaped her lips. Her own orgasm hit at the same moment, silent and shuddering.
She lay there afterwards, boneless and trembling, his release cooling on her skin.
In the darkness, he felt tears on her face when his hand brushed her cheek.