As he gets off his school bus 18 year old John was wondering what he can do now that he won't have school since today was Friday, his parents are away as well so he has the house to himself. As soon as John entered his house his pit bull Sam was run over and greeted he "Hey there girl how are you" he says as he pets her, "let me get change and then we can go out."
He went up to his room to change out of his school clothes as he was naked a picking out a shirt there was one that caught his eye, "Huh what's this?" he says as he picked up a cool looking red shirt. He doesn't remember if he bought this or not, but he shrugged it off and decided to wear it.
That's when he hears Sam walking towards him. John turns as Sam jumps and hugs him as she licks his face, as John was hugging her tighter he felt something weird, he looks down and surprised to see Sam's body was moving into his they were merging together! As Sam's body was merging into John's body it started to change as fur was growing all over him, his hands was changing in a mix between a hand and a paw it was the same for his feel and legs.
It was all happening so quick that John wasn't able to process what was happening, but before he can process this more Sam was still licking and rubbing his face, that made their faces begins to merge , as their faces merge closer so did their memories it was so much to process that both of them were unconscious.
The new being begin to wake up they felt weird with also a headache, "What happen?"
When they heard their voice, they noticed that it's different, that's when they remembered what happened to them. They moved to John's mirror to see their a mix of human and dog or a anthro"W-wow is this me?", they said as look at themselves. They can see that their body was similar to John's but also a little bit of a girl's look, they looked down pass their red shirt to see their canine sheath which holds their cock, they can also feel their pussy underneath.
As they continue to look at themselves and the red shirt, that's when they remembered from John's memories hearing about treasures and what they can do especially about the special treasure. "So this is a special treasure that
can merge and change." that's when the red shirt vanish it turn invisible revealing their breasts and figure as well as their posture and muscles on their furry body, the shirt then turned back to being red.
"So because of this I'm John and Sam now, but I feel like I'm more than just them. So maybe I can call myself Johnsam for now, I think that fits." Johnsam is now wonders what kind fun will they'll have now that they have this special treasure as their tail wags with excitement.