Every since Sonic was born he always had a mark on his arm and no one never knew why. Until one day he meet a black and red hedgehog. Sonic wonders why he feel familiar, even though they just meet. Is he connected to this? If so, why? Read to find out!

In this story Sonic and Shadow were very close childhood friends, but one day Sonic just vanished out of thin year everyone thought he died and that was the end of things but a few years later after being promoted to a special agent Shadow finds out a secret that will have everyone second guessing themselves. What is the secret? Read and find out!

Shadow and Silver are young teenagers, Shadow is 16 and Silver is 14. They have been great brother throughout their lives, but they started having the feeling that they needed another sibling. They were mostly bored and they thought that if they had another younger sibling, things would be a lot more different and fun. One day, their parents, Jules and Aleena had special news for them, and they were thrilled to hear that they were going to have another sibling. What will happen when their new sibling is here? Will they be able to keep him safe from harm? Find out in this story!

if you want to ask or dare the Boboiboy siblings go ahead and be my guest and the other characters there you can ask or dare them as well! so don't be shy!

When Sonic runs into his old rival, he finds out something he never knew about Shadow. Since he never knew the secret, he didn't know whether it was new or a secret kept for a long time.

Sonic and the gang visit one of the biggest and most ancient caves in all of Mobius for a Summer activity. What started off as a harmless, self-guided tour, soon became a danger to their lives. The gang becomes split up, as the roof begins to cave in. They must go on a journey to find each other again and find their way out, without cell phone reception, or a map. When Sonic and Shadow get stuck together, they may find that they work better together than they thought, perhaps in more than one way.

~sonadow~ When I first started to get feelings I thought that it was just a silly crush and it would eventually past but it didn't. The more I thought about it the more I continued to fall, fall into the endless pit never going to find the end. As much as I am going to hate to say this, I am just helplessly in love with the mobian in front of me. Cover done by the amazing person known as @Bluereddino !!!!!!!! #44 in sonictheheadghog on 20/05/2018

Shadow rescues Sonic after he is kidnapped by a crazy scientist who makes Robitnick look like a saint. However, after the rescue, Shadow and Sonic must hide in a cave for two days. During this time, Shadow notices strange things with Sonic. Had something happened that he doesn't know of? Warning: YAOI- MPREG- OTHER M RATED don't like don't read.

♥ Lets just say our little blue friend had been drowning in lies but he can no longer lie to himself and then Shadow and Sonic have been acting more like each other, Shadows nice and friendly and Sonic, he's well.....lets just say Not all nice guys turn out to be nice. ♥ ( Shadow falls for the new dangerous hedgehog and little does he know the other may share that love and hate for him. After all he's not that nice. )

Shadow dies leaving a cobalt hedgehog heartbroken. Someone takes advantage of the Azure hedgehog's sadness and makes him go insane. What happens when Shadow mysteriously comes back and ends up seeing a resistance against Sonic. How will either of them feel once seeing each other? Will their love for each other burn away or grow stronger? Can/will Shadow help save Sonic from himself? And what is this?! Specimens?! Sonic seme x Shadow uke though some rare Shadow seme and Sonic uke moments. Happens during the Sonic x: Ark. But it goes way more differently.