It's totally fine

Kana was the type of person who always did whatever she wanted, and Alana loved that. The way that Kana casually laughed off her request sent a little thrill through Alana, so she didn't mind the refusal at all. Besides, she'd be getting plenty of love from Drew soon enough.

Alana quickly got ready. When she noticed that she had two copies of every textbook in her room, she checked the inside of the front cover and saw that one set belonged to Kana. She put both sets in her bag, then ran to the kitchen. A maid was there who was very understanding about her being late and made her a bagel, which she carried to the car.

Alana had never ridden in the back of a limo before, but she didn't have much time to soak in the luxury of it before Kana had more for her to do.

"Get out your math book," said the sexy Asian girl. "We've got fifteen minutes before we get to school, so you can quiz me with some of the questions from the back."

Alana was amazed at how her new foster sister was able to do calculus problems in her head. By the end of the trip, she felt like she'd also gotten a good mental workout just from giving the quiz.

When they got to school, absolutely everyone said hello to Kana as she walked by, but Kana only responded to the ones she liked. Alana just walked behind with all the books. The head cheerleader stopped and talked to Megan for a moment, and Kana admired how hot they looked together. They were completely different, a tall redhead with huge breasts and an Asian girl with jet-black hair, but they were both sexy as hell.

Then they walked into calculus class and it was Kana's turn to be turned on. Despite the "relief" that she'd gotten from Alana at home, she still looked at their hot, young teacher lustfully. She said, "Hey, Mr Winters!" with an obvious flirty lilt. He just smiled back at her knowingly as she took her seat.

Alana sat beside her and said, "He's really hot, isn't he?"

Kana smiled. "Oh yeah! If I got a hold of him, I'd fuck him so hard he'd beg me to let him quit teaching and become my stable boy!"

Alana looked over at their teacher, then looked back and said, "Um... do you... really want to?"