Satsuki comes to her senses.

Shortly after Kazuma stopped cumming, the expression on Satsuki's face quickly changed. It was like she had just realized what she was doing. Her eye's bulged and she withdrew her mouth from around his cock. "What the..." she said as she took in the sight before her. Sitting on her bed was Kazuma, with his pants pulled down. Next to him was her mother, who was in her succubus form and pressing her body against Kazuma.

What does she think she is doing, Satsuki thought angrily. She knows how I feel about him. As she continued to look at them, a new feeling began to emerge. Why? she thought. Why is this sight turning me on more?

"Oh good," Yuzuha said as she saw the confused look on her daughter's face. "It seems like you were brought back to your senses." As she said this, she got up off the bed and knelt down on the floor next to her daughter. "Before we can continue, we need to get you out of your succubus form." Hearing that, Satsuki blinked. She did not realize she had transformed. "Don't worry," Yuzuha said. "It's easy. Just close your eyes and focus on how you normally look."

Satsuki followed her mother's instructions. She closed her eyes and thought about how she normally looks. As soon as she did, she started to feel her horns disappearing and her tail retracting. "Very good," Yuzuha congratulated. "Now why don't you tell Kazuma how you feel."

Satsuki nodded and stood up. "I'm sorry for not doing this properly, but..." she said as she looked into Kazuma's eyes. "Would you be my boyfriend?"

"Of course, I will" Kazuma quickly answered. "Thank you," Satsuki replied. "Because of my succubus nature, I need someone to feed off of and I wanted it to be someone I like."

"That's great," Yuzuha said as she stood up and pulled her shirt off. "Now let's continue."

"What are you doing?" Satsuki asked as she turned to look at her mother.

"I'm going to join the two of you," Yuzuha said as she moved closer to her daughter.