Cole sat up on his bed, Erika's head still between his legs as she looked around. Cum was running down her chin and she still had a hand between her own legs, when she saw Melissa standing in the doorway.
"E... Erika? What... are you..." Melissa said as her voice was breaking.
Erika had only come into Cole's bedroom because she needed his mutant cum to revert back to fully female, and now it looked like she had sneaked into Melissa's brother's room for sex! She was only touching herself to make sure her penis was gone, but Melissa was probably thinking she was masturbating while sucking on Cole's big dick...
Cole pulled on his bedsheet to cover his groin - his member would not revert to fully human even after climax. The room was dark though, so Melissa hadn't noticed his furry balls and softening knot.
"Melissa! I can explain..." Erika attempted while wiping the cum off her face with her right hand. She also wet spots on her nightgown, especially near her belly and groin.
"Don't bother" Melissa said coldly as she turned around. Erika heard her friend run to the bathroom and locking herself inside.
"Oh shit" Cole let out. "Well at least she hasn't seen either of our monster cocks..."
Erika said nothing and stood up, following Melissa's steps. The corridor was quiet; some light came from under the bathroom's door. Closing in, she could hear quiet sobs inside.
"Melissa I'm sorry... This isn't what it looks like I swear! I don't even like your brother..."
"Leave me alone Erika! I don't want to talk to you. Go away!!!"
Erika felt heartbroken. Reluctantly, she returned to Melissa's bedroom. Her friends were still asleep, snoring or moaning softly in their sleep, their bodies barely covered. The sight would have turned on Erika madly, but her mood was too low and her thirst for breeding had been temporarily quenched by mating with Melissa earlier.
She slid under the covers, tears running down her cheeks. The bed was still wet from all her cumming but she was too tired and depressed to care. She wondered if Melissa would still refuse to talk the next day.
When Erika woke up, barely rested, she could hear her friends laughing downstairs in the kitchen.
As she got up from the bed, she realized she had dried cum all over her body, and the bed smelled strongly of sex. She opened the window to air the room and decided to take a shower before rejoining with her friends.
In the bathroom she was relieved to see the goo's effect was still present - her body was just that of a regular, albeit very precocious, young female. Putting on her bras and dress from the day before, she found some comfort in her feminine curves and perky breasts.
Summoning all her courage, she stepped out of the bathroom and prepared herself to meet her friends downstairs, and Melissa.