"Okay Mickey, I need you with the Demoman to move up on the left side of the objective. Romeo, you need to go in with the Spy-"
— Kira and his 'tactics training'
"Shut up. All OF YOU! You know, I'm not sure how many friends you've had, Orimura-sensei, but I know that when someone nearly kills two of my friends, they die by my hands."
— Kira, Chapter 8, telling Chifuyu what happens when you mess with Kira's buddies.
Infinite Stratos: Prototype Spartan tells the story of Kira Orthun, the pilot of the IS Unit MJOLNIR, as he enters IS Academy, told from his perspective. The story mixes in elements of Halo while keeping in parts of Infinite Stratos, all the while adding new parts into it, somewhat expanding on the world of Infinite Stratos and how the world could've been affected with its introduction.Even with the elements of Halo present, the author manages to keep Kira Orthun from being too overpowered considering how Halo: Combat Evolved took place past the 2500 year range, sticking with the rules of IS battles. The story includes some Alternative Character Interpretation, putting a few characters into a new light and exploring how one person can make a huge difference, and also delves deeper into how a super weapon for one gender can tip the equality of the sexes massively.The story was published August 24th 2012.As of December 15th, 2012, Season One (what the first season on the anime covered) has been completed.Also, as of May 5th 2013, what the Light Novels cover (as Volume 8 had yet to be released) has been completed.As of May 12th, 2013, Season Two has been completed.The story was completed on August 24th, 2012, the author saying he had been aiming to complete the story in a year. The author also states that four omakes will be coming out, one of which has been completed.Note: When referencing chapters, please use the fanfiction chapter numbers. (For example, Chapter 25 on the fanfiction site is Chapter 22 from Kira's point of view as the author does not label Season Openings/Finales, Flashbacks, and Holiday Specials with 'Chapter X')
Infinite Stratos: Prototype Spartan provides examples of the following tropes:
Chekhov's Gun: Remember that thing that took up all of Kira's remaining Equalizer's all the way in the beginning? It's actually Hyper Drive, a performance enhancer with a nasty time limit of five minute usage.
Also, at the beginning of Season Two Kira mentions he added a coin dispenser to his IS. Guess what he uses as a weapon later on.
Kira: I don't train. I survive. There's no way to train for an ambush that kills your best friend. There's no way to train with how society sees you. There's no way to train for assassins and terrorists trying to kill you to remove the symbol of man's hope. But I prepare for the next time it could happen. Because I can.
Heroic RROD: Kira's Hyper Drive. It boosts strength, reaction time, everything to make him a better fighter. It only last five minutes before he goes unconscious before it starts to negatively affect him.
Heroic Sacrifice: Kira pulls this off when Muesel is about to throw the world into chaos with rampaging Prototypes.
Subverted, in that he didn't really die, but rather just took him and Muesel elsewhere so she couldn't activate the program that would remove the limits on the Prototypes so they could cause mass destruction.
Hero with Bad Publicity: After Chapter 9, due to Kira's murderous rampage, it gives people against him more leverage and makes him seem like a monster.
Hidden Depths: It's easy to see Kira as a stoic soldier that can kill in a heartbeat but in Chapter 22 he reveals that he's just as scared as anyone else, but he can't afford to show it because then everyone loses morale and they all lose. He also mentions that he's fighting for those he cares for, not just for the sake of fighting.
"I don't care!" Rei snapped, "Kira, I don't care if you don't want my pity, my apologies… but I do know one thing. I will always stand by you, no matter what has happened to you in the past!"
And for the first time in a while, Kira wept tears of joy as he embraced Rei, "Thank you… I've always wanted to hear that from someone other than my closest friends that I had before all of that. Now… you need to hear the full story… so go back to E, and hear her out, will you? And don't blame Tabane, since she's what gave me… the opportunity to be what I am."
"Yes, of course." Rei gave him one last squeeze… and before she left, pecked him on the cheek before skittering away, blushing madly.
Indy Ploy: Done in Chapter 3, where Kira makes up a plan as he goes along using dice to figure out what he'll do next.
Kira: "Look, just because I don't show it doesn't mean I'm not. But I'm going to tell you the truth right now. We're up against an unknown enemy that has far superior technology than what we've previously encountered, a giant crawler is making its way up to the school right now and is wrecking the town, so I'm pretty much shitting my pants brown right now. But I can't afford to show it because then everyone loses. I have to force myself to be brave or at least look brave, because there is no such thing as a flawless person, let alone me of all people. I know you're scared, but just ask yourself, if you crawl away and hide, what happens to the people that you care for?"
Word of God: States that the readers are broken between pairing Kira with either Tabane or Chifuyu.
"World of Cardboard" Speech: After Laura calls Wolf Team out on how informal they are for military at a live presentation, Kira gives one to quiet her, plus a lot more as time goes on.
Kira:"Ah, technically we are military, but we don't serve a country. We're loyal to Tabane, who gave us this chance. Ain't that right, Wolf Team?"
Kira:"Also, we're like brothers. We steal from each other, fight one another, steal each other's girl and laugh about it, but when there's something that threatens or harms one of us, it does so to all of us." I glared at her, "I know I look like some mascot up here, but trust me, I have seen things that I should never have seen."
Delivers another one in Chapter 9:
Kira: "Look, all you morons! I knew fair and well that coming here could result in my death or worse." I started my speech, "But did I run away? No! Did I cry in a corner? Hell no! I came down here ready to fight my way out if I needed to! Hell, I've been in a position you were in, but the difference between all of you and myself at the moment is that I GOT UP AND STARTED FIGHTING AGAIN! Are you just going to cry about the fate that was handed to you, or are you going to tell destiny to go fuck itself, take up a weapon, and fight until you are shoved six thousand feet into the dirt?!"