Ty decided to return to the stands. His body looked very different now. He stole Marco's muscles some minutes before, but Marco was a lot taller than Ty and he didn't change his own height so he looked like a beefy muscular young weightlifter. He was not sure about staying like that, but he decided to enjoy it for some time.
Ty watched the championship swim meet and was very happy to see that Marco was feeling like himself again. Ty was curious and tried to read Marco's mind during a race and discovered that he was missing being a huge muscular bodybuilder. But why? Ty thought he hated it but now he seemed to like it. He had to ask Marco what was happening.
Ty waited for the championship to end. Marco won the gold medal and Ty felt very proud of him, but after every swimmer went to the locker room he started the magic...
"I wish I was on the locker room, and everyone but Marco and me were in another room." he whispered.
His body vanished from the stands. Marco was about to enter the showers when suddenly everyone disappeared and Ty appeared there.
"You!" Marco, already naked, shouted loud.
Ty smiled. He explained everything to Marco and apologized about all transformations he did without asking first.
"It should be hard to believe but I have seen them, they are real. You have magic powers."
"Yes, haha!" Ty laughed. "Your muscles feel very good, thank you!"
Marco laughed too. They became friends almost instantly, and Ty was very happy.
"Ty... I want to ask you something."
"Yes, tell me."
"I love being the perfect swimmer that I am now. It's like a dream. However..." Marco gulped. "Now that I see you with that short but huge body, I think I'd like to be like you."
There was a silence.
"I know I know! I know it's a weird wish. Forget it." Marco felt ashamed.
"No no. It's not a weird wish. Everyone is free to have his/her own dreams." Ty said.
"So, what do you think? Is it possible to give me some strange power of yours to change my body whenever I want? Then I could swap between your beefy and bulky look, or my actual perfect swimmer body." Marco wondered.
"Well... I don't know if I can't do that. Let me think another solution..." Ty said.
After some seconds of thinking, Ty got an idea.
Suddenly Marco started to feel weird. His body got shorter, and his muscles started to grow again. He was slowly getting his own perfect copy of Ty's body, it was like a dream!
"Do you know what's a werewolf, don't you?" Ty asked while his naked friend was still changing.
"Yes, but..." Marco said as he noticed how his body was getting beefier.
"I'm going to turn you into... a wereswimmer!" Ty grinned.
"A... were... wereswimmer? What's that?" Marco said. His transformation was almost done.
"Done!" Ty said.
Marco took a quick look at his new body. He liked it, of course, but he had to ask Ty about that wereswimmer thing.
"And now tell me... What have you done to me?" Marco said, and noticed that he wasn't taller than Ty anymore.
"As I told you, you are now a wereswimmer. This is your new body." Ty said pointing to his new friend's chest. "However, everytime you enter a pool your body will transform into the perfect swimmer one you had before. And when you get out, you will change back to your short but wide body."
"Nice!" Marco liked the idea.
"You won't have to worry about your Speedo, because it will grow or shrink with you. And finally, everyone will know that you suffer these transformations, but they will see them like something normal."
Marco hugged Ty and then went to the showers with his new body. Ty felt very happy.