One day, at Iwatobi High School while in the locker room
"Hey, Haru." Rin said.
"What?" Haru questioned in monotone, drying her hair with a towel.
"In all the years I've known you, I've never once seen you laugh." Rin stated.
"How about you?" Haru asked. "You used to laugh like an idiot at just about everything, and now you don't." She remarked.
"Shut up!" Rin yelled. "I've grown up is all." He retorted.
"I wouldn't say 'grown up'." Kokoro spoke up.
"Keep your comments to yourself." Rin retorts.
"But Rin-san has a point." Rei said. "I've never seen Haruka-senpai burst out in laughter."
"Koko-chan, have you ever seen Haru-chan laugh before?" Nagisa asked the youngest swimmer.
"Not that you mention, I never have." Kokoro admitted. "What about you, Mako-onii-chan?" She asked, turning to Makoto.
Makoto didn't say anything for a moment. "I have." He finally said.
"Oooh?" Everyone said, immediately interested.
"What are you saying, Makoto?" Haru asked.
"Well, well..." Rin started to say, slinging an arm over his girlfriend's shoulder with a grin on his face.
"Hey, get off of me." Haru ordered.
"Spill it, Makoto." Rin demanded.
"It was back in elementary school during an event." Makoto began. "We were staying at a hotel when I heard laughing coming from the futon next to mine. Yes, it was Haru's laughter. It was really scary."
"It was probably just her talking in her sleep..." Rei told him.
"You got our hopes up for nothing, Mako-onii-chan!" Kokoro shouted.
"It's true!" Makoto insisted.
Rin glanced over at Haru. Then an idea came into his mind, causing him to smirk deviously.
"Kokoro, Makoto, Nagisa, Rei." Rin said.
They other four swimmers looked at him curiously.
With the same smirk on his face, Rin hooked his arms under Haru's.
"Do it." Rin said.
The others just blinked. Then they all grinned when they understood what he might.
"Attack!" They yelled, going towards Haru and started to tickle her.
"Hey! Knock it off!" Haru shouted. Her whole then began to shake. Then, much to the shock of the others, she started to laugh.
Everyone just stood where they were as they watched Haru's laugh, their mouths gaped open widely. After a few moments, Haru finally managed to regain her composure and stopped laughing.
"What hell was that for?" Haru asked.
Instead of saying anything, the five swimmers just laughed and glomped on Haru.
"Hey! Are you guys listening?" Haru asked.
"You laughed, Haru!" Rin stated the obvious.
"No, I didn't!" Haru denied.
"Haru, are you embarrassed?" Makoto questioned.
"You're so cute, Onee-chan!" Kokoro declared.
"You have sure a lovely laugh, Haruka-senpai." Rei remarked.
"I was not laughing!" Haru denied.
...
Later that day
"Are you still mad at me?" Rin asked his girlfriend, who he was walking home with along with Kokoro, who was a few ways ahead of them.
Haru didn't make any reply as she turned her head away from him.
"Come on, you have to admit it was pretty funny." Rin insisted.
"It was not." Haru finally said. "Holding me back while the others tickled me. Jerk."
"It was a real shock, though. Seeing you laugh and all." Rin said.
"I was not laughing." Haru denied.
"If you say so." Rin retorted, not believing Haru for a single second. "Even so..." He started say, placing his hand on the top of her head. "I think you have a really nice laugh." He told her, smiling.
Haru felt her face heat up from his compliment, her heart starting to beat faster than usual. "Idiot..." She mumbled.
Then, leaning closer to him, Haru placed her mouth over her boyfriend's, shocking him and causing his face to turn as red as his hair. A second later, she pulled back and walked ahead, the blush on her face turning a darker shade of red.
Rin just stood where he was as he watched his girlfriend's retreating figure, taken aback by Haru's sudden kiss. Then Rin smiled and quickly went after Haru.
"Hey..." Rin started to say, slinging his arm over Haru's shoulder when he taught up with her.
"What?" Haru asked.
"I love you." Rin told her, pulling her body closer to his.
"Dummy..." Haru mumbled, her face turning ten shades of red. "I love you, too." She confessed.
"Are you two flirting with each other back there?" Kokoro called from up ahead.
"Mind your own business!" Rin yelled.
"Aw! Onii-chan's so mean!" Kokoro whined.
"Shut up, you brat!" Rin snapped.
"Both of you stop it, right now." Haru ordered.
