Work Header

The Deeply Coloured Sky- A Satoru x Yashiro Smut Fanfic

Chapter Text

Quiet, all life began with quietness. Quiet so deep and dark it felt like Satoru was still at the bottom of the river, his clothes dragging him down as his glasses floated away, with only the moon peering into the water as his company and witness. It felt so he was being held by that soft light.He reached out towards the moon it felt so close so comforting, as though he could grasp it. Pluck it from the very sky and hold it to his chest. But it seemed out of reach....the more he tried to grasp it the more it seemed to stretch out of his fingertips.

Flying higher and higher Into the deeply coloured sky. It’s inky black hues like rippling silk, submerging the once bright moon in darkness swallowing it whole. Like a greedy monster, then there was nothing and he was drowning. “ me.” He mouthed, his lungs feeling like they were being filled like two balloons. Bubbles floating from his mouth like snow globes floating to the very surface...where no one could hear him. Submerging his cries...under bodies of water.

But then...he was being pulled out of the water something strong wrapped around his fingertips dragging him out of his icy depths.

He lurched upright crying out, tears caressing his pale and lonesome face. Spilling down his austere cheeks as he stretched his arm outright. The moon had disappeared turning into a night light just above his head flickering like a firefly. The lake dispersing to reveal...a dimly lit room a soft blue light bathing everything around him. The gentle pressure of something in his hand, he looked in confusion as gloved fingertips curled around his hand holding his outstretched palm. The glove the colour of a midnight sky, black leather.

“Good morning Satoru...”

That evil voice...made him feel devoid of any hope he had in his chest as he stared at its owner who was sitting in a chair beside him, grasping his hand firmly was none other than Yoshiro Gaku, the man responsible for everything. Even through his tears he could recognise him.

His dark eyes that once crinkled in amusement at him, the lines of his jaw sharper, the bags under his eyes made him look older. He wrote glasses now and looked every bit the refined gentleman instead of the monster he really was. Everything in Satoru’s blood made him want to crawl away from this man. He was sure even his cells was trying to escape him as his breath lurched in his throat. They looked at him with joy, his lips curling into a feral smile.

Everything would be over...if he so much as gave anything away. All it would take is a well aimed pillow to his face and Yashiro will win, he already felt his limbs turning to jelly, even his back protested at him sitting up so suddenly and he felt woozy as a revelation hit him.

Satoru Fujinuma was alive. Alive and staring evil fully in the eye...the game was not over yet. An Insidious creature, Gaku who had no problem murdering without caution. He would not let this chance escape him. He cleared his throat and shakily rasped.

“Who are you sir?” His voice surprisingly steady for someone panicking on the inside.

The surprise on the older mans face was almost comical if it wasn’t so frightening the sudden change, the smile dropped out oh his eyes and face. Leaving behind an unfeeling creature a remorseless thing. Like he was staring at a dead creature. But then the man....laughed. He just laughed.

His eyes shutting, his deep voice bouncing around in Satoru’s head. It would have been joyous if Fujinuma didnt know who it was that was laughing. To him it sounded sinister. Like a villain that had gotten everything he wanted. It was out of greed....not happiness. Their mouth dipping at the corners, the sparkle in their eyes. The way his hand tightened around Fujinuma.

It made his veins feel like they were filled with ice, even though the hand holding his was so...very...warm and human...he knew Yashiro Gaku...was not....human. Humans...couldn’t do what he did.”Satoru...Fujinuma...” The man spoke his name so wistfully. “I am your old home room teacher, do you remember me? Yashiro...Gaku..can you say that?” Fujinuma tried not to look too relieved when Yashiro stopped holding his hand so tightly. The older man stroking the inner palm of his hand with his fingers,lightly brushing over his cold finger tips. His eyes like two buckets of molten coal as he observed Fujinuma.

He resisted the urge to pluck his hands out from their long fingers, which seemed more than content to rub the coldness of his own knuckles away. Their own fingers like spiders legs, spindly and Satoru couldn't help but feel like something was scurrying up his spine.

“Ya-Shi-Ro.” The man said sounding his own name out. Slowly and patiently like a kind figure. His voice like a soft bell as Satoru’s gaze dipped to their lips, his mind lost in thought.

In public school Satoru had been so comforted by the voice of his home room teacher. It was exactly the kind of voice you could drift off to. Sitting beside the window with the warm sun on your back on a lazy Monday afternoon and Mr Yashiro’s voice idly drifting by your ears. It had been a source of comfort...and familiarity. He’d gotten into more trouble than he would like to admit, falling asleep like a spell underneath the velveteen murmur of his vocals. He could almost feel the gentle hands of Yashiro on his back trying to wake him up.

“Satoru? Satoru...Satoru???”He blinked as he was dragged out of his daydream, a hand on his frail shoulder and a concerned look on Gaku’s face. He didnt know if that concern was real or another mask. Yashiro Gaku just seemed to be...a walking enigma. What mask was he wearing today?

“Is everything okay Satoru?” His voice dripping with concern, the furrow of his eyebrows. His hand spread out ominously over Satoru. Hovering like a dark cloud. To anyone else his hand would have been a comforting gesture. But for Satoru Fujinuma who knew better it was like a dagger pressed to his knife depriving him of oxygen.

He felt something heavy settle in his lungs, like someone was crushing them. As though Gaku was reaching into his chest and squeezing on the delicate organs himself.

But he simply looked this unfathomable creature in the eye, this empty void staring back as he tried to replicate their words, each syllable feeling like nails raking in his throat. A struggle without mercy. “Y-Ya-Shi-Ro...G-Gaku.” His voice as raw and painful.

“Thats right Satoru, good boy!” His hand clasping down on Saturo’s head ruffling his hair fondly as if he was still a school boy and he was Yashiro Gaku his innocent school teacher.

The pleasant sparkle in their eyes, the soft hand in his hair would have been made him feel all warm and fuzzy once upon a time, a lonely boy craving for attention, one that had to grew up to soon. He would have vied for Yashiro Gaku’s praise...done anything for it, which made it all the more worse that betraying feeling of happiness that bloomed just beneath the surface. But how could...someone so evil...look so happy?

It almost...scared him. That desperation to be liked by Yashiro he forced that feeling three times under...for their game...for two was not nearly finished...not until Yashiro Gaku...could no longer smile at him like he was doing now. Not until Yashiro Gaku was behind bars. Not until Yashiro Gaku...lost everything, until then Satoru Fujinuma wasn’t done...playing detective.

Chapter Text

Outside, he was outside!
The wind played with his hair, it felt so good to be out. Out of that stuffy room, out of his own body and mind, to feel his limbs stretch as he walked in the cold spring air along the streets. It’s like the world was fresh and new in his eye’s as though he had been reborn so had the world.

He had thought the world had sprung from existence suddenly around him, like a bubbling brook. But it was only Satoru that had been trapped in a hellish stasis, not awake or asleep but just...existing in a void. The world in fact had never stopped spinning, it continued without him, children grew, lovers met, plants sprouted and the sea still smelled like salt. Even as he was awake now if felt like he had been freed and the world was in love with him.

Countryside had scrawled into large complex cities. As he walked, the hardened concrete strange underneath his own feet but he couldn’t have felt more delighted. He came towards the end of a curb, distracted by a leaf that had sailed by and he took a misguided a step, tripping off the sidewalk, his legs crumpling like paper planes.

“A-Ahhh!” A hand came out of nowhere grabbing his wrist. Another hand pressed on his back, fingers pressing into the bones of his spine steadying him, his glasses hanging half off his face. The physical contact making him physically want to flinch as he stared wide eye’d at Yashiro Gaku.

“Careful...wouldn’t want you to have an accident?” But they sounded very much like they wished he would....Inky orbs like the corneas of a tarantula, studying him as though he was a particularly interesting new specimen, waiting for him to let down his guard even for a mili-second. Yashiro’s face was much closer than he expected. His face reflected in their glasses. His own shocked appearance like a rather disconcerting mirror. This was no good. He couldn’t keep jumping every time they just touched him. They would get suspicious.

Calm down, calm down its’re ok. Satoru Fujinuma forcefully willed his heartbeat to slow and blinked slower to allow himself some time to settle down. He wasn’t free of the spider yet...not the one that had clouded his mind with its cobwebs, nor the one touching him so gently now.

Right...he couldn’t forget...this wasn’t over. Not until he unwound the clever little webs they had spun over this small town, encasing everyone in their perfectly constructed lies. Wrapping them in false sense of cocooned security...when Yashiro was really just biding his time to...devour the innocent of this rural town and only Satoru Fujinuma knew what he was really like. He put on what he hoped was a convincing smile.

“S-sorry and thank you..I’m not...not used to....” He trailed off. That hand on his back holding him possessively as he was pulled closer his side pressing into Yashiro’s firm chest as they wrapped an arm around his waist, pressing fingertips to his ribs. Warming his side with their dense body. “Oh yes...I suppose you’re not used to your new should stay close to me.”He’s not sure of me yet. Satoru thought. Those words, accident and stay close to me...were thinly veiled threats or tests, he felt like they were more for Yashiro’s benefit and Satoru’s warning. He highly doubted they were suddenly deciding to be so warm hearted and considerate out of the goodness of their non-existent heart. He looked at them.

“That’s true, thank you sensei.” He smiled bright as the sun, one advantage of pretending to be normal in his past life was he had a knack for....plastering on a fake smile in a flash at the best of times and as much as he would rather not he leaned into their touch. Resting his body weight against them and sighing.

They stiffened instantly underneath him, their body clenching slightly at the sudden weight thrust on top of them and the hand on his waist gripping his waist slightly making Satoru bite down a wince at the tightness. Satoru looked them in the eye. He saw the war resigning inside their eye’s, unrecognisable lights dancing in those voids, they had genuinely been taken aback by his angelic smile as though he had slapped them instead, surely taking the gesture as genuine.

They were confused... Like they didnt quite believe him or disbelieve him. Good he thought. Watch me confuse the hell out of you, monster. He watched the swirls of their pupil as they were caught in their own thoughts battering down a smug smile of his own. The hand against his rib absent minded stroking his side weakly. The other hand clasping his wrist, the nail digging into his skin.

“Sensei?” He asked innocently, batting his eyelashes with a dazed look for effect. Bringing them out of their own little world, the light of recognition in their eyes when they finally looked at him was almost a relief. Satoru couldn’t tell what they were thinking when Gaku was lost in thought. Like staring at the muddy sediment at the bottom of a river, clouding all.

The milky distant gaze they had until he woke them out of it....was frightening. Was that blank look detached from any humanity...the same look he gave poor victims before he...or did he smile all sickly. The hold on him no longer flimsy but strengthened with resolve as Yashiro Gaku smiled back, beaming. Their mischievous glint back to normal. “Yes, we can’t let you get a cold out here. Come now.”

He let Yashiro Gaku coddle him, directing him into their car, letting the murderer reach across to put clip Satoru’s seatbelt in. Letting Yashiro make as many jokes as he wanted. Even letting Yashiro pat his arm good natured. But he would not let Yashiro win. No matter the cost.