"Okay we will need my laptop" Kate now said in her little brother's body
"I will get it sit tight little bro!" John said in Kate's body
"Seriously?" Katie said
It was weird for John now walking in the body of his big sister Kate. The sway of the hips and breasts felt so odd yet pleasurable at the same time. Once he reached the room he saw the laptop and before he (she?) could pick it up she felt a massive headache come on.
"Dammit fuck!" John covered his mouth just saying a no-no word but it really hurt him no wait her. Wait why is she feeling like a she now, she was a he, or was he... she? John felt all of Kate's memories come in
"John are you okay?" Kate said rushing in seeing John holding his head in pain
"Yeah I am not good Katie, my head feels funny"
"What happened?"
"I touched m..y- your laptop and I feel like something is being shoved in my head."
"Okay just turn the laptop on and let me log-in"
"Okay just get in and look it up sorry sis I am going to take a nap"
The transformation must have been more intense than Kate thought for John. Kate had a hard time looking up stuff due to her smaller hands and new position on the chair. Meanwhile John was moaning in pain on the bed he felt very different new thoughts and ideas come into his mind.
Kate was looking through the internet and found out the curses name. It was actually pretty common. It is known as Van Kik Lil Hoff's curse. It happens frequently for family's with Germanic decent which their family was. She found that the curse can be reversed for both people if they simply wish to swap back with-in 24 hours from the original wish. Kate was super optimistic until she came upon something freighting, a special effect of the curse. If a switch occurs between family members where one family member is at least twice as old as the other, the younger of the two will start to believe they are the older one and will become a perfect copy of them. The amount of time this takes varies by person but once the "copy phase" is complete the younger person will be stuck as a copy forever. Although, the original older one can swap no harm as long as it is within 24 hours. Kate needed to wake John now considering she was 17 and he was 8.
She wasted no time tapping John
"John wake wake up, I wish we swapped back"
Soon Kate could feel the tingle coming back and she saw she was about to change back
and then