No other option

Without knowing how much time she had Emily couldn't risk anything. Sure a futa was brand new but for all Emily knew the marker may have made futas an actual thing rather than just give her and her alone a cock, plus she had even designed people to get turned on if they saw her as a futa.

In a panic she reach up and wrapped her fingers in Alex's hair who mewed in happiness before dragging sister face down and rubbed her still soft cock against Alex's face. Alex didn't show any issue from being **** from a soothing moment to having her big sisters cock shoved in her face. She just got to work licking and kissing.

Emily fumbled for her phone as she held Alex against her hardening cock. Alex let out a happy moan as she wrapped her lips around her beloved sister and felt her grow in her mouth. Emily slipped as the feeling of Alex circling the head of her cock with her tongue made her a little loopy from pleasure. She recovered, grabbed her phone and then saw that she would need to position her sister, currently all she saw was the back of Alex's head, not what Sarah wanted.

Still in a panic, and now a little light headed from pleasure, Emily stood up. Alex suddenly lost her support and promptly fell onto the ground.

"Owwwwiiieee." Alex complied looking up at Emily with big eyes at the sudden shock and pain.

Emily didn't have time to think about that, she grabbed the back of Alex's head and started to rub her cock against her little sister lips. Alex complied but didn't look as happy as she usually was. Emily quickly took several pictures of her little sister and sent them to Sarah.

There was no immediate response and Alex continued sucking. Emily couldn't really focus on both panic and pleasure so she did the reasonable thing and had a small melt down. This beyond freaked out Alex who was currently thinking she had failed her big sister. She popped the cock out of her mouth and lovingly go to kissing, stroking and doing all she could to be the cute little sis that she knew her big sister loved.

Emily seeing this started to care less about what was going on and more about her little sisters mouth. She then had a moment to wonder if she should maybe use the marker to lower her libido it was kinda insane.

Both that thought and Alex's mouth quickly left her mind as a new email appeared.

Emily was a little more careful with removing the nuzzling Alex this time. When she sat down Alex wasn't sure what she should be doing, Emily had moved to close to the laptop so there was no access to her cock. Alex settled on just hugging her sis.

Emily opened the email.

"I said your cock cuck, get your face in there."

"Fuck!" Emily shouted panic returning, Sarah was making sure she had proof and if Emily didn't send her anything Sarah had a picture of Alex with a cock in her mouth. Emily had fucked up so badly. She quickly moved back and, this time, gently moved her sister's mouth to her cock and positioned herself to take the selfie.

She snapped the picture and pulled a protesting little sister off her cock and sent it to Sarah.

This time a response was immediate.

"Good girl. I am going to be giving you some extra tasks from now on."

Emily sunk down and tried to think of a way out of this. The obvious one was to go the sorority and use the marker to make Sarah forget all of this, but that came with it's on complications. Namely if Sarah was going to get close enough to use the marker on, and what Emily would write that would solve anything.

Feeling thoroughly depressed Emily stood up and went to sulk in her room. Alex tired to follow but the door was closed in her face and she was left to her own devices.