Disclaimer

Hey everyone, so here's a new SeiGou fanfic because I just love those two together. Also overprotective Rin comes out xD Please feel free to tell me what you think, I'd love to hear your comments and suggestions :3

Also, I don't own Free Iwatobi Swim Club (because if I did there'd be more SeiGou xD)

The sound of splashing water and excited voices emanated from the Samezuka Academy pool. An energetic, red haired captain blew his whistle to get his teams attention. Most of the exhausted team members huddled around their captain…all but one, who still streaked through the water.

"Yosh, good job everyone," Captain Mikoshiba said bringing his hands together, "Why don't we take break."

He was the captain of the team so of course he believed in hard work, but he also knew there had to be some limits…and one second year with pointy teeth had yet to learn that lesson. Captain Mikoshiba raised his eyebrow as he heard the sound of someone pulling out of the water. He turned to see Rin pull up and reset himself for another lap.

He sighed, "Oi, Matsuoka, didn't you hear what I said?" the Captain asked already knowing his response.

"I don't need any break," Rin said snapping on his goggles, "A break won't benefit me, so there's no point in having one."

The captain smiled and walked over to Rin. With great force he gave him an energetic slap to his back.

"Ah alright then Matsuoka," Captain Mikoshiba said with a laugh, "Just don't strain yourself too much," he said as he slapped Rin's back a few more times.

Rin flinched, "OW, okay I get it!" Rin exclaimed annoyed as the captain just laughed it off. Just then, one of the second year boys called the captain.

"Captain, there is a visitor here," he said.

The captain raised an eyebrow, "Hm, okay, let them in."

The boy nodded and opened the door. The captain's eyes widened and then lit up at the sight of a certain red haired first year girl walk in slowly. Her red hair tied up into a high ponytail, and her Iwatobi swim club jacket draped around her shoulders, slightly falling off to reveal her uniform.

"Excuse the intrusion," Gou said meekly as she scanned the room. Her face lit when her eyes found the spot where her brother and the Captain.

"Tch," Rin said when he caught sight of Gou. He couldn't put up with another distraction.

"Onii-chan! Captain Mikoshiba!" Gou greeted happily as she ran towards them.

Captain Mikoshiba could feel his heart skip. Gou-kun greeted me…he thought happily.

"Ah Gou-kun, fancy seeing you here," The Captain said energetically.

"Captain Mikoshiba…the name Gou is boyish enough, must you and –kun after it?" Gou asked with a pout that made the Captain blush slightly which he nonchalantly hid with his usual laugh.

"Gou," Rin called with annoyance in his voice, "I thought I told you to limit your visits. I'm really busy so go home."

Ouch…Captain Mikoshiba thought. He couldn't help but see Gou's slight hurt expression. He didn't like it. To him Gou looked best with that smile of hers.

"Ah, don't be like that Matsuoka," The captain said giving Rin another hard slap to his back.

"Ow! Stop that!" Rin exclaimed, "Anyway Gou, just go home for now, I can't hang around with you today."

Gou pouted and then thought for a second. Then to Rin's surprise a smile formed on her face.

"Who said I came to see you Onii-chan?" Gou replied with a hint of teenage attitude.

"Huh?!" Both the Captain and Rin said simultaneously. Gou smiled at his reaction while Rin regained his composer.

"Well, then who'd you come to see?" Rin asked annoyed and maybe even slightly jealous.

Gou smiled, "I came to see Captain Mikoshiba," she said happily as she pulled on the Captain's arm and clung to his side.

This time the captain couldn't hide his blush. A deep crimson color stretch across his face and blended in with the sides of his hair. W-what's going on with my heart rate? The Captain thought as Gou clung harder to his arm. The happiness inside him couldn't be explained.

Rin on the other hand looked like an atomic bomb ready to blow. Rin had noticed the Captain's growing affection towards his sister and he had tried his best to control his disapproval, but this was crossing the line. Did his absence when he was in Australia make Gou forget that he was in fact her older brother? And that she was flirting and clinging to his captain right in front of himHe. This was too much for him to just keep inside. Maybe he could deal with her socializing with the Captain when she visited, or letting him call her by her first (despite his disapproval before), but clinging to a males arm who clearly had interest in her right in front of him was way too much for him to handle, and Gou knew it.

"Gou! What the hell do you think you're doing?!" Rin exclaimed, flaring his pointy teeth, "Get off the Captain now!" Rin ordered. Gou mercilessly ignored him and gripped the Captains arm even harder.

"It's okay," the Captain said as he smiled and rubbed the back of his neck with his free hand, "I don't mind."

Like hell I know you don't mind…Rin thought angrily.

Gou ignored her brother's murderous aura and turned towards the Captain who could help but smile widely at his situation. Gou was actually clinging to him and he was ecstatic, even if it was just to anger her brother.

"Captain Mikoshiba are you free tomorrow?" Gou asked with a small blush and an adorable grin.

Wait…did Gou-kun just ask me out…The Captain thought shocked. Was he dreaming…because if he was he didn't ever want to be woken up.

"Um, Captain Mikoshiba?" Gou asked waving her hand in front of his unblinking eyes.

"YES!" Captain Mikoshiba exclaimed loudly as he took Gou's hands in his own. He could hear Rin growl in the background, but at that moment he didn't care. "Yes, yes, a million time yes, I'm free anytime," the captain babbled.

Oh my god he sound like such a dork…but it's cute, Gou thought with a laugh.

"Really? You can really meet up with me tomorrow?" Gou said excited.

"Of cour-" The Captain began to say until Rin cut him off.

"He can't," Rin said bluntly causing the two to turn towards him to see him wearing a killer expression, "Captain, if you have forgotten we have a little something called practice tomorrow."

"Oh, that's right," Captain Mikoshiba said as he pondered.

"Oh, I'm sorry I didn't know," Gou said with clear disappointment on her face. The Captain flinched, he couldn't bare to see Gou upset. From the corner of his eye he could see Rin smirk in victory.

"Maybe some other ti-" Gou began to say until the Captain frantically cut her off.

"No, wait!" the Captain said causing Gou to look up with hopeful eyes, in turn making the captain blush slightly. The Captain cleared his throat and blew his whistle signaling his team.

"Alright everyone, because of your hard work and due to an urgent arrangement, practice tomorrow is cancelled, Captains orders," Captain Mikoshiba said in and energetic voice. From the corner of his eye he could see Gou smile which caused him to smile too. Before the team could celebrate a day off Rin spoke up.

"What!" Rin exclaimed angry, "Urgent arrangement my ass, you can't just cancel practice because of a date!"

Once Rin said this numerous whistles and congrats came from the other team members which the Captain took with a victorious smile while Gou held her hands in front of her crimson blush. Rin grit his shark like teeth at the total opposite reactions he was going for.

The Captain turned towards Rin with a somewhat victorious smirk and walked up to him and delivered a few more slaps to his back.

"Ah don't worry about anything Matsuoka, if you want to practice tomorrow, you can do it to your heart's content," the Captain said as he continued to slap his back.

"Ow! Damn, stop!" Rin exclaimed.

"O-onii-chan," Gou called slightly worried.

"Don't worry Gou-kun, Matsuoka's like a steel bar," The Captain reassured her, "A few slaps to the back won't kill him," he said as he delivered another hit.

"Don't just assume that!" Rin exclaimed as he flinched, "And anyway, you can't date Gou so tell everyone practice is still on."

"Wait…" Gou called, "Why can't he date me?"

Rin's eyes widened at her question. He looked around anxiously as Gou and the Captain looked at him, waiting for his answer. Rin clenched his fist and pulled off his goggles.

"Tch, do whatever you want," Rin said annoyed.

Gou laughed, "Whatever I want," she asked mischievously. She was really toying with him today, but hey, it was his fault for being so distant all the time.

"H-huh, no…uhh just go home already Gou," Rin said flustered and defeated. Gou and the Captain laughed at his childishness.

"I think you've teased him enough," Captain Mikoshiba said to Gou.

"Yea I guess you're right," Gou said with a laugh, "So I'll see you tomorrow then." She said as she started to walk towards the door.

"Yep!" The Captain said as he smiled happily knowing that she wasn't just teasing her brother about that.

"Bye Onii-chan, Captain Mikoshiba!" Gou said waving as she was about to leave. The Captain waved back with a smile while Rin grunted, still upset from before.

"Ah don't be like that Nii-chan," the Captain said teasing Rin.

"Don't call me that!" Rin said flaring his teeth angrily until a thought dawned upon him. His frown quickly turned into a smirk.

"Captain, do you know when or where you are meeting Gou?" Rin asked with a dark smirk. Captain Mikoshiba raised his eyes and looked up as he thought.

"Uh, no, but I'll just text her," The Captain said with a laugh.

"Hmmm," Rin said with a smirk, "Do you even have her contact number?"

At this the Captain stopped laughing and immediately reached to find his phone and scrolled through his contacts. Rin's smirk widened.

"Ah…no," Captain Mikoshiba said lowering his head in defeat, but then immediately raised it and turned towards Rin.

"Matsuoka, can you give me Gou-kun's number?" the Captain asked in a pleading voice.

Rin smirked in a way that put every other villain's smirk to shame, "Why of course Captain, give me your phone."

Captain Mikoshiba handed Rin his phone while Rin pondered for a specific number in mind. Once he remember it he quickly typed it in and tossed the phone back to the Captain.

"Thanks Matsuoka, I got to go figure out what to wear so later!" The Captain said energetically as he ran out. Once he was gone Rin walked up to his first year roommate.

"Nitori, I'm going to need to switch phones with you for a while," Rin said holding out his phone.

Nitori looked at him confused, but he couldn't say no to his sempai so he reach for his phone, "Sure thing Sempai…but what do you need it for?" Nitori asked.

Rin smirked, displaying his sharp teeth, "I'm just going to help my baby sister with her first date." And with that Rin took the phone and headed to the door, leaving Nitori alone.

Nitori looked down at Rin's phone in his hand and sighed, "Better watch out Captain, it's attack of the six foot Onii-chan…"

Oh no what is big brother Rin going to do? I don't think that smirk of his was a good sign...Well, we'll find out in the next chapter :D