This is an A.U that Soriel is canon, also it is depressing and can get very dark.
This A.U features a Soriel O.C and some minor O.Cs only there for plot reasons.
This A.U has a soundtrack on online sequencer and please listen to it from newest to oldest because the older ones can be kind of bad cause some if them were just me messing around and Ruins and Snowdin have like a million redone versions.
Sans and Papyrus are much older than most of the cast, meaning most romantic ships using them will be weird, expressively since most of the cast that is younger than him see him as a mentor/fatherly figure.
Sans is autistic and has mental illness including P.T.S.D, Bipolar disorder and Seizure disorder, he shows this at multiple times in the book, I have Autism myself so I have experience what it is like to be Autistic.
There does exist alternate versions of Sariel, and Fallenswap Sariel is far from the first, and unlike her underswap counterpart she is not FLIPPING PURE EVIL! honestly who knew someone with such a high pitched voice would be so evil?
This book will be in chronological order of the event that happened, meaning it will start with pre-events, Chara's first appearance, the start of the main story, current events and post-events.
A lot of pre-events focus on Sans, but this is not a sans-centric A.U it's just he is very important in Fallenswap, and some other reasons as well
Please do not use these following ships on these Characters, (and if you do, don't harass me about it)
Sans x Sariel (as in kin-crest)
* Sans is Sariel's Father, shipping them as family members and not in a romantic way is okay.
Sans x Papyrus (as in Font-crest)
* this one is obvious why I don't want you to ship this
Sans x Chara
* Chara is 19 as in current events and was 8 when she fell down, Sans is 103 years old with the physical age of 27. Sans is NOT a pedophile, and though he dislikes her for killing his wife, Toriel, he does care for her and acts as a guardian-like figure to her.
Sans x Frisk
* Frisk is technically his step-daughter and he views her as such in the true ending when she reveals her true identity, otherwise, they are enemies and again Sans is NOT A PEDOPHILE!
Sans x pretty much anyone who is not Toriel
* though Toriel soul is currently absorbed and fused with Chara thus Toriel is technically still alive and for Sans, being in a relationship with anyone is like cheating on his wife. Also Sans was born in 1923 as current events is 2026, he is 103, and much of the cast that are adults he met them when they were children and he was an adult, and he shows very little interest in being in another romantic relationship. BUT SANS X BRATTY AND CATTY IS ACCEPTABLE AS A JOKE-SHIP SINCE THEY SEEM TO FAN GIRL OVER SANS
YOU ARE READING
SW!Fallenswap - Undertale A.U
FanfictionThis is an A.U I made, it also has a sound track on online sequancer, and an animation on my Youtube account Sariel's world Ella. This A.U is kinda depressing and can get kind of morbid at times, so reader discression is advised. In a torn apart und...