♡TagYourYanderes♡

Sae's posture was far from perfect, honestly, his wasn't really great either, but compared to Rin, he looked like a ballerina.

So he started off small, verbally reminding him to sit up straight when passing by, poking at his side, sometimes even fixing his posture himself.

But after seeing no improvements, he opted to get more physical, as brothers do. Hitting his back, which forced him to stand straight, flicking his forehead, and even hitting him over the head with a newspaper or two.

But when Sae passed by the living room and saw Rin hunched over on the couch, scrolling through his phone, he felt his patience finally snap as he marched over to where Rin was sitting.

He loomed over the couch for a moment, with Rin none the wiser about the menacing aura behind him as he continued scrolling on his phone.

Sae always wanted the best for his brother, whether Rin believed that or not, and this stayed true even now.

Sae should've been the one to correct him on his bad habit growing up, but he failed to do that. Now he plans to make up for it through any means necessary.

Sae rubbed his hands together as he took a deep breath before raising his arm and slapping Rin on the back of his neck.

Rin yelped like a dog that just got its tail stepped on, as he grabbed the back of his neck with his hands and turned back to look at his brother.

"What the hell's your problem?!" Rin yelled.

"Sit up straight." Sae simply replied as if he didn't just knock the daylights out of him.

"What are you, my mom!?"

"Worse, I'm your brother. Now straighten up, I haven't seen a back that curved since the Hunchback of Notre Dame." Sae finalised as he walked back to his room.

Rin sat in silence for a minute, his back now straight, but his mood now horribly soured as he kept his hand pressed to the stinging pain.

"Bitch..." Rin muttered under his breath.

---

Sae continued on like this for the next couple of weeks. Popping into the living room, slapping the dogshit out of his brother, then walking away knowing Rin was probably thinking about ripping his head off his shoulders.

Today was no exception; Sae walked out of his room, already stretching his fingers as he made his way towards the living room.

His eyes landed on the couch where his victim Rin always sat, but as he stepped forward, he noticed something different.

Instead of his brother's neck sticking out, his shoulders rounded, and his back curved, he sat up tall, with his neck, shoulders, and back all in alignment.

He was sitting up straight.

.

.

.

Sae rubbed his hands together as he took a deep breath before raising his arm and—

Rin whipped his head around to face his brother, "What the hell are you doing?! I'm doing what you asked—!"

Rin's shouting was cut off as he felt his brother's hand lightly patting him on the head. "Good job, Rin. Keep it up." Sae said softly as he removed his hand from his head and walked back to his room.

Rin didn't move a muscle for at least five minutes, still in shock and still reeling from his brother's praise.

From that day on, Rin stood as tall as a soldier, and big brother was there to praise him for it every time.

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