The following fiction is based off of the ongoing light novel series originated by Nagaru Tanigawa. All characters in this fiction are owned by this author unless otherwise stated.
In order to fully enjoy this story, it is recommended to have acquired knowledge of the Haruhi Suzumiya Light Novels up to Volume Nine, "The Dissociation of Suzumiya Haruhi."
"That's a lot to ask for the average fan. Who has that kind of free time on their hands these days?"
The actual prologue of this story begins in the next chapter, Prologue. If you feel confident enough to continue to the fiction, you may stop reading this section and proceed to the next chapter. Otherwise, please stay here for a briefing of everything you need to know. Ah, where to begin...?
"I would start with the characters."
Yes, of course. Assuming that you, the reader are familiar with everyone from "The Melancholy of Haruhi Suzumiya" animation, I will list the recurring characters that appear outside of the animation. Be warned that potential spoilers are ahead.
The Ninth Novel of the Haruhi Suzumiya light novels has solidly introduced a rival 'SOS Brigade' of sorts.
The rival alien is Kuyoh Suoh. She is believed to be the culprit of attempting to seal the entire Brigade in time in "The Snow Mountain Syndrome." She tends to dress in all black while having long, black hair. Her speech patterns are notably underdeveloped.
The rival esper is Kyoko Tachibana. She is a petite individual in childish pigtails. Despite her innocent looks, she was revealed to be held responsible for an organized abduction of Mikuru Asahina some time ago.
The rival time traveler goes by the name Fujiwara. He is a tall, blonde individual who Kyon finds very disrespectful. Out of all the counterparts, he has done little more but show himself . Of course as a time traveler on a mission, simply existing can change things in ways that no one else can fully comprehend.
Last but not least, there is Sasaki. Just like how Kyon and the others follow Haruhi around, the people mentioned above follow this philosophical individual. In addition, she is also revealed to be an old friend that Kyon had not associated with since late junior high.
"You might want to Google these people in case you are curious."
In Book Nine, both brigades met face-to-face on one fateful day. What seemed like an average meeting turned out to be the start of a dimensional turning point. In other words, the story split off into two dimensions at a specific point in the story. These dimensions are labeled as Alpha and Beta. The Gamma Dimension takes a fictional third route with some notable differences in comparison to the other two.
"That's about it for the recap. Is there anything left to say?"
There is but one minor detail. This fiction will be expected to contain the following Genre Elements: Angst, Drama, Friendship, Hurt/Comfort, Romance, Sci-Fi, and Supernatural, and Suspense. It feels as though no two parameters can possibly do the description justice, but I suppose it cannot be helped.
To the veteran readers, thank you sincerely for your support. To the new readers, I hope you find this information helpful and I hope you will enjoy this fan fiction!