This is a Sonadow AU where Shadow is an alien from a different universe. He finds Mobius and tries to become the most powerful... but without anyone noticing him. He is trying to become one of them. Over time, he figures out that Sonic is the quote on quote "ultimate lifeform" on Mobius. He tries to become acquaintances with Sonic so he can learn their culture... as things take a turn. (These characters are seen as young adults. The only child depicted in this story is Tails. So, for whoever may be thinking, I am sexualizing minors. You're wrong. I also will say that this book is heavily emotional and has very graphic scenes. So I advise whoever reads this as well to be very open-minded and aware of the triggers I've listened down.) Trigger Warnings: -Self-Harm -Mental illness -Self Sacrificing -Murder -Graphic scenes (Blood/Gore) -Rape -Foul Language -Suicide - Loss of friends/family -Depression [Updated book cover: March 28th, 2025]

When a new and mysterious figure arrives in the wake of Robotnik's disappearance, Sonic's world is thrown into chaos. That figure is Shadow-a powerful, enigmatic hedgehog created as the "Ultimate Lifeform," but unlike anyone expected: fierce, brilliant... and hiding a past she refuses to speak about. Shadow's arrival sparks conflict across the world as governments, scientists, and old enemies all seek to control her. But Sonic sees something different beneath her cold exterior-pain, loneliness, and a heart she keeps locked away. Despite their clashes, a fragile trust begins to grow between them. Sonic becomes the first person she ever lets close... and the only one who makes her question the purpose she was created for. But as enemies close in and Shadow's forgotten memories begin to surface, a devastating truth threatens to shatter everything: Shadow is carrying a secret that could change the fate of the world-and Sonic's life-forever. Caught between destiny and desire, Sonic must protect Shadow not just from those who hunt her, but from the darkness buried within her own past. Together, they will face betrayal, sacrifice, and a love powerful enough to break the shadows themselves- if they can survive what's coming.

Sonic and gang start another year at their highschool. this year there seems to be a new student, who catches Sonic's attention. WARNING: SONADOW I REPEAR SONADOW! SHADOW UKE! SHADOW BEING REALLY OUT OF CHARACTER! SONADOW CREDIT

{Sonic Boom Universe} 《Warning! Boy×Boy, swearing, violence, potential smut[Bottom Shadow], suicide\cutting, mentions of rape, and a bit of Manourge.》 ~ "You had you're way with me, now go." ~ "Just, leave me be!" ~ Sonic The Hedgehog, the speedy hero everyone knew and loved, was depressed. He hated his body, and everything to do with himself. No one knew the real him. That is until a certain ebony hedgehog walks in on one of his daily nightmares, and gets slightly worried. Shadow The Hedgehog, the edgy one, the one who was covered in darkness and darkness alone, holds a painful past in his hands. Despite not knowing it the two are both the same, slowly withering away. But just when Sonic gets the help he needs it may be to late. ~ "I'm not openly Bisexual yet." ~ "Wait! Shadow's gay!?" ~ "Shh, it's ok sweetheart." ~

While Shadow struggles in college, his only source of happiness is watching his favorite idol on Utube. Now that his idol has secretly transferred to his school for unknown reasons, he thinks that his boring life will finally turn around. (( Idol Romance )) p.s. this is also uploaded on Ao3 ^^

Dr.Eggman kidnaps Sonic and does an experiment on him, hoping to put Sonic under his control but Eggman ends up turning Sonic part cat. Now Tails is figuring how to turn him back while Shadow take care of him. Wonder what will happen? Read to find out!

Sonic catches the attention of the Vampire King. Friends turn their back on him. And what will become of the world when Sonic's true identity is brought into the light? Sonic's Alpha Frontcover © myself :)

Sonic and Shadow are polar opposites, people say that they don't really see eye to eye with Sonic's cocky remarks and Shadow's stubborn actions. What if it was just a facade? Shadow finally sees how Sonic is behind all the bravery that was on tv; A blue hedgehog with a bad case of anxiety. As time goes on, these polar opposites face both their desires and feelings, will those feelings grow between those two? Or will it all just be one big mistake? Tune in for . . . "My Sweet Mistake" Disclaimer: This story contains a lot of sensitive topics such as; depression, anxiety, ptsd and more but also contains 18+ scenes as well. If it is too much for you or if you're under 18, DO NOT READ! Ty! RANKS!! #1 ×2 , #2, #4, #5 & #6 on Sonadow! #1 on #soniccharacters! #1 in #polaropposites! #1 on #shadowxsonic!

Sonic hide secret from his friend, and specially from his boyfriend Shadow, Sonics escape from the danger and accidentally found his losten adoptive family and live with them as for Shadow only the guilt and depression make his live worst, after 12 years later Shadow and Rouge went to a vacation on a mysterious island they find a little kid a the fountain and strangely a strong connection start to grew between Shadow and the little kid. What kind secret did Sonic hide? Who's the little kid? And why there's a strange and strong connection between him and Shadow? What would happen next? It's for me to write and for you to discover😉 Enjoy your reading buddies ❤

After many years of rivalry against everyone, Rouge grew tired of seeing Shadow always being alone. Due to the fact that he was always busy with G.U.N. or would lock himself in his house, Rouge decided to show Shadow how to use a phone and start online dating. Of course the ebony one refused but what happens when he starts getting texts from people and he gets too annoyed and starts answering? Who are the ones texting him? And who will win his heart in the end? *