Reincarnated in Star Vs The Forces of Evil

Mewberty

Aster and Marco were at the gym. Apparently karate wasn't enough for Marco, so he dragged Aster along even though he could probably just cast a weight loss or muscle enhancer spell.

After the work out, they were walking to the showers.

"Hey, somebody put something on you." - M

He pulled a little Purple Heart flake off of Aster's neck that was on his skin. Aster looked curious and then his eyes widened when he saw it.

"Oh, shit..." - A

"What?" - M

He looked confused.

"It's Mewberty..." - A

"...Mu...myu-?" - M

"Myu-burr-tea. It's like puberty for you humans, except...magic. I turn into a monstrous butterfly-spider thing temporarily and get very horny." - A

Marco shivered a bit, but he was used to weird magic stuff.

"Okay...how long does it last?" - M

"Not that long. The shortest was an hour, and the longest was a week. So somewhere between a few hours to a few days." - A

"What?!" - M

He tried to calm himself.

"Okay, should we lock you somewhere? And what if you get stuck like that?" - A

"Yes, and send me back to Mewni." - A

He said as he began to hand over both his dimensional scissors and wand.

"What are you doing?" - M

"You'll need to be able to fight me off. And I don't want to wake up lost in some crackhead back alley dimension." - A

"Okay, but...do you really think I can do this?" - M

"Yeah, i mean, you've shown you can handle monsters pretty well. And you have a strategy beforehand. So it should be fine." - A

Aster began to stare at some of the guys at the gym, the hearts on his body multiplying.

"Hey hey! Focus!" - M

He snapped his fingers to get his attention, which worked.

"Okay, let's lock you...how about a locker?" - M

"Yeah, yeah..." - A

He said, staring at the guys behind Marco. Marco dragged him to the locker room and put multiple padlocks on it to try to make sure he stays inside.

"There! You all good?" - M

He asked. He'd left a phone and snacks in there for when he turned back.

"Yup!" - A

He said, eating some chips.

"Okay, im gonna go see if I can buy any more padlocks. Call me if anything happens." - M

He said before leaving. Aster sat in the locker, very bored until he heard someone come in. He perked out and his face turned a deep shade of red as he saw a bunch of muscular guys in nothing but speedos.

"Alright, practice is gonna be in here cause someone pooped in the pool." - ???

They began stretching. Aster stared, eyes wide as the Purple Hearts began to rapidly multiply even faster than before..
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Marco was walking out of a general store and heading back to the gym with a bag full of heavy padlocks.

"There goes my spending money..." - M

He grumbled until he heard screaming.

"Oh no..." - M