More tests

Finn was brushing Karma's breasts to erase the text. The big mass was moving and wobbling under his vigorous brushing. He tried to focus on his work and not on her massive tits. After a moment, they started shrinking until they reached their normal size. The text was gone.

"We better test this somewhere safe and be careful." Finn said, once the job done.

Karma nodded, still red faced, as she was keeping her top closed with both hand.

Finn took back the marker and they both went back to the dormitory room. On the way there, Finn used the other side of the marker to make the writing high stamina permanent. Indeed, once highlighted, it disappeared.

At the dorm room, she changed her top and he put some night clothes.

"Can we agree to never talk about what happened in the showers ?" Said Karma, after getting new clothes.

"I can't promise anything." answered Finn with a smirk.

Karma thrown a murderous gaze.

"Ok, so, we have to be careful at what we write on our body. But what else can it do ?"

"What do you mean ?"

"I mean, does it affect us only physically ?"

"I don't know, try it if you want." Finn told her as he throw at her the marker.

Karma scrutinized the item and noticed the other side of the sharpie.

"What's that ?" She asked.

"It makes the writing permanent."

"That's really useful if you have the right words."

Then, she decided to write something on her arm and she suddenly seemed like in trance. It lasted just few seconds, but after that she just shouted "Holly shit !"

After that, she revolved on her chair to look at her books and turned the pages furiously with a large smile.

"I understand ! I understand everything !" She said.

"You understand what ?" Finn asked.

Karma then looked back at him and showed her arm. On it was written genius.

"My course, all of it !"

After that she used the permanent side on her writing.

"I can't be dumb again after that." She mumbled to herself.

Finn didn't really like it, she seems too enthusiastic, almost feverish.

"Can I get back the marker ?" He asked her.

Note :

Finn : High Stamina (perm)
Karma : Genius (perm)