Storm Armed Force, now confirmed to be the biggest, the most dangerous, and most ruthless illegal armed force on planet Equis, is planning a huge conspiracy. Their goal of taking over Equestria is only one-fourth of their actual intention. However, their intention remained unknown for now, but from their attacking pattern and route, their targets were most likely to be countries and kingdoms that are outside the land of Equestria.
No one really knew how the Storm Armed Force was founded, nor any background of their leader and commander. Not even the EIUIA (Equis International Unified Intelligence Agency), the greatest and the most powerful intelligence agency could send any spies into the Storm Armed Force WITHOUT getting exposed the next day; the SAF (Storm Armed Force) seemed to have their own intelligence network, due to the fact that most of the high-class governmental agents were getting assassinated by the SAF. After the attempted assassination from SAF against Princess Luna failed, Princess Celestia immediately shut down the entire country; not even trade routes were opened.
The other kingdoms did the same after most of their high-class characters and agents were dead. Now, Equestria is a dead land.
SAF later confirmed as an international targeted terrorism force, what they did is far worse than anyone could possibly imagine; they slaughter every single living creature they see in their way, children, the sick, the old... As for the females; especially the ones in their teenage years and early adulthood... They were raped, then killed in an extremely painful and shameful way.
Wherever they go, fire burn down every structure, plus that their mass destructive weapon; hypersonic magic generated pulse cannon, which can easily wipe out a city that's big as Manehattan, as well as destroying mountains, which is a extremely dangerous threat to Canterlot; luckily, this destructive weapon takes nearly ten months to charge.
Currently, there's five popular and well-known commanders in the SAF, each of them strike fear into the deepest part of the locals' hearts. They're known as the Legion of Doom. (Since this is an alternative universe, I'll assign some antagonists as Storm King's followers. Since this is a bit related to Demon Slayer.)
The strongest, and the most dangerous among them all is Commander Grogar. This man with demon-like features made him the main leader other than Storm King in the entire SAF. Not only did his physical features terrify his enemies, but his skills as well. The staff of Sarcanas, owned by the Storm King himself, was given to Grogar as a reward after killing nearly 15 thousands enemies during his bloody campaign. Over the years, his staff absorbed a massive amount of magic which could easily kill the four princesses and every leader of Equestria.
The second commander, Tirek. A lost Centaur prince with ultimate urge of vengeance towards his father and brother, although it has been thousands of years. His ability is unique in its own way; to absorb other's magic and turn it into energy which he could easily reuse to create destructive beams. He never uses any physical weapons, relies mostly on magic, yet no one with magic can ever survive him; not in the history of Equis.
The Third Commander, Tempest Shadow, despite the fact of being in the third place in the SAF ranking, she's a total devil. There's this time when she led the SAF to take down a village with over 4,000 armed abyssinians with heavy weapons, the result was shellshocking; Tempest killed everyone, with the loss of almost every single member under her lead. Storm KIng was both impressed and unimpressed by this, as the result, Tempest's ranking went up to only third place. Which gave the spaces for her mind to have the idea to kill both Grogar and Tirek...
The fourth commander is Chrysalis, a changeling; used to be the queen of the most terrifying creatures in Equestria. However, after Starlight Glimmer reformed the rest of her hive, Chrysalis was abandoned and left alone to die. Hatred took over her as she later joined the SAf; just to take her revenge against Starlight Glimmer.
The fifth commander is rather a strange one; a Pegasus filly named Cozy Glow. BUt don't get fooled by her physical appearances, although with a young skin, she has the heart of an adult. Most of the strategic assaults that were unleashed throughout Equestria were all planned by herself. Although she doesn't have as many attacking skills as the rest of the commanders, IQ is her most dangerous weapon.
Under the five commanders and Storm KIng's lead, SAF haven't suffered a single defeat yet...
Until this record was broken by a SINGLE person...
Rugen Solaris.
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The Solaris tribe is one of the most powerful groups of warriors on the land of Equestria, not even Yakyakistan can defeat them in battle. Not only the fact that they're dragons, but also that each of the tribe members has the ability to awaken strange marks on their foreheads which can boost their physical strength and their mental skills, making them the most dangerous and devastating warriors.
However, the warriors which awakened the marks suffered an ultimate backfire; unable to live past the age of 250 years. (I changed their settings here due to the fact that dragons can live for a REALLY long time. 250 years for them were the same as 25 years for a human.) As the marked warriors suddenly began to die out, a huge blank appeared in the tribe, which gave the chances for the SAF to attack.
The SAF wanted to take over the dragon land, and the biggest threat is the Solaris tribe, although they have less marked warriors than before, Storm King wasn't a risk-taker.
Finally, after two years of continuous warfare, the Solaris tribe was driven to extinction by the SAF...
Or so they thought.
His mother hid him in a secret spot in their cave, which the young drake watched as his mother was killed in front of his very own eyes by the SAF. At that moment, something inside him snapped. The drake doesn't remember much, but he was damn sure that he killed them.
He awakened the mark as well.
However, since his body is still a child, and that it's his first time using the mark, the drake was sent into a coma.
In his coma, his subconscious, he was visited by a rather strange uninvited guest. A creature claimed to be a human soul whom's name is... Yoriichi Tsugikuni.
The drake has no idea how it'd been in his subconscious, but in his long time stay with Yoriichi, he found out that this human swordsman is from another world full of flesh-eating creatures called 'Demons', and that the only way to kill them is to behead them with a special type of Uchigatana called 'Nichirin Sword'. And that combined with another special sword skills called 'Total Concentrate Breathing technique' , the user would be as powerful as the demons.
Over his time staying with the human swordsman, the drake, was trained and crushed by Yoriichi. Everytime he fails a test or any practice, Yoriichi would smack him with the tilt of his sword, "Remember who you are!"
Finally, after what felt like millions of years gone by training with Yoriichi, the drake, finally mastered the total concentrate breathing technique, which Yorrichi passed down; Sun Breathing. He was rather surprised by the fact that the drake completely took in his breathing form without any trouble.
Yoriichi, whom's soul is finally fading away after finding another successor of Sun Breathing other than Tanjirou, gave the drake his last gift...
Yoriichi's OWN Nichirin Uchigatana.
After the drake woke up, although he felt as if millions of years had gone by, in real-life, it's really just several seconds.
The little dragon, with his breathing technique and experiences, began to strike down the SAF one by one, slowly but sternly striking fear into their hearts.
At that moment, the drake died...
Rugen Solaris is reborn.