Plain colored

Miko grabbed a plain pair of pink panties and slid them onto her legs. They clung tightly to her labia and gave her a prominent cameltoe. Her sister was smaller than her, so it made sense.

She rushed back downstairs and gathered her things, pulling her socks on and grabbing her backpack.

"Hey mom, can you take me to school today?"

"Alright, just this once."

Her mom wiped her hands on her pants and grabbed her keys, sliding on her shoes as she reached the door.

Miko walked to the passenger side and got in. Her mom joined her and started the car.

The drive to school was boring, but Miko felt restless.

When they arrived at the school, her mom bid her farewell and drove off.

Miko briskly walked to her favorite bench. It was so early that the school hadn't even opened yet, so she had to wait here.

The schoolyard was pretty much empty, save a few students with their headphones on, evidently listening to music.

Miko shoved her backpack to the side and leaned back. She jumped back up as a squirt of piss escaped her.

She looked around and after seeing that no one was near, she flipped her skirt up and looked at her sister's panties.

A fuschia spot had appeared on the previously pink panties. She squeaked as another spurt shot out, the stain expanding.

She grabbed her bag and stood up. She presssed her legs together and ran towards the side of the building.

She spotted a tree that was hidden by bushes and made her decision.

As she reached the tree she squatted down, a longer jet saturating the pink panties.

She moaned as she pulled the panties to the side, and a long stream erupted from her.

It hissed as it came out, and the yellow liquid steamed in the cold morning air.

The piss dribbled down her thighs as the pee slowed. Her panties were wet, but not completely soaked. The ground under her had become muddy.

She blushed and stood up, quickly running to the other side of the building. The school had opened its doors and she rushed in, spending the time before first period in the bathroom, wiping herself and trying to dry her panties.