Kira is an overprotective brother. Pray for Athrun.

"….."

"Athrun, I – mhmm.."

"Do go on Cagalli." His hand found the top button of her shirt. "What were you saying?"

"Athrun, I… Oh god Athrun!", she whimpered as he lighrtly bit the section between her neck and head.

"Mmhmmm, yes?"

How fun. AsuCaga fans, get out your cameras!

And then Kira entered the room.

Nevermind, AsuCaga fans. Run. Overprotective brothers are NOT, I repeat, NOT happy to see random people taking pictures of his sister and his best friend making out.

"Hey Cagalli, have you seen Lacus? I wanted to - Holy shit! Athrun, what are you doing to my sister!"

First lesson, Kira is an overprotective brother. Very overprotective. And while happily murder anyone who touches his sister without his permission.

Hence Kira grabbing Athrun by the collar of his shirt and glaring at him.

"Excuse us my dear little sister, we need to have a man t- man talk."

"Man to man talk?" Cagalli raised an eyebrow. "You mean crybaby and moron. I don't see any men."

Then she left. ("Wait Cagalli! Don't leave me with Kira!")

Athrun was scared.

Second Lesson, when in an argument with an overprotective brother, always avoid pointing out that your girlfriend can take care of herself.

"... You know Kira, she can take care of herself. And I'd appreciate it if you put me down."

Kira dropped Athrun. On the floor. Ow.

"So what?" Kira started waving his hands frantically and screaming, "It doesn't mean she still doesn't need to be protected. People like /you/ could come and try to rape her! Then what? You're stronger, we all know that, and even if she tried to fight back, she couldn't win!"

Sigh. "Kira, how long have we known each other?"

"... Ever since we were little."

"And in all those years, have I ever done anything to make you distrust me?"

"... Well, you left Cagalli for Meyrin, and then you left Meyrin for Cagalli, and then you were caught up with Meer, and -"

"I take that sentence back. Do you see me as a type of person that'd rape your sister?"

"Yes."

"..."

Lesson Three, when dealing with overprotective brothers, never try to reason with them. It never works.

"Kira, just listen to me. I love Cagalli. She loves me. It's only natural - "

"I don't think so."

"Kira, you've probably done it with Lacus already."

"Lacus and Cagalli are different."

"But they're both loved ones aren't they?"

"Cagalli's my /sister/."

"Yes, but you love Lacus, and I love Cagalli. It's how things work out. So -"

"Over my dead body."

Silence. Sigh. Twitch.

"Kira!"

"What?"

"Cagalli isn't a little kid anymore Kira. She can take care of herself."

Gasp.Shock. "Are you saying she doesn't need me anymore?"

"..."

"Athrun?"

"Yes?"

"Well, I actually prepared this speech with Lacus beforehand, so here I go."

"You prepared a /speech/ with Lacus?"

"Shut up! Anyway, I will allow you to date my poor innocent little sister ("Are we talking about the same girl here?"), however, if you harm her in any way, or make her cry, I will take Strike Freedom and stomp on you death. Slowly. And then I will take the Akatsuki and step on you to death. And if you're still not dead, I will drag you to the bottom pits of hell and leave you there."

"..."

THE END.