Karasu is your boyfriend, he has a cool motorbike and you often ride his motorbike

*one day as usual you always get carried by Karasu on his motorbike to go to high school this time you don't want to sit in the back because you are shorter than Karasu finally he gives in and sits you in front of him while his motorbike is driving you secretly take a cute pink sticker then stick it on Karasu's motorbike

"what are you doing?" said Karasu

"just a little prank..."

You said while chuckling