No carbs

 -Friend: "If you keep looking at me like that I won't be able to eat. I already asked you, do you want some pizza?"

 -"No, no, I can't. Just tell me how it tastes. Please."

 -"Oh, come on, you're almost drooling. A slice of pizza won't hurt you."

 -"No, Akiko and her mother were clear. As long as I'm in her body, no carbs."

 -"And why do you follow all their orders? The bodyswap happened for mysterious reasons 3 months ago. You have the right to decide about your life."

 -"Don't say that. You make this situation seem "final". I prefer to follow their instructions, because then I still feel like "Jack", simply "guest in Akiko's body". If I start deciding how to live, I would feel more "owner of this body." And that's something I don't want."

 -"Ok, but you can't cancel yourself. To continue feeling like "Jack" you need to recover some of your habits. Like eating pizza with friends every now and then. Akiko will understand if you talk to her openly."

 -"Akiko maybe. Also because she is doing what she wants in my body. But her mother... Her mother is a dictator. She repeats to me every morning "A young lady doesn't eat sweets and carbohydrates". And she checks my weight every evening to make sure I'm not making her daughter fat! And food isn't the worst thing. When it comes to college grades she's much worse. She demands I get an A on every test, or she yells at me for hours. And you know I hate being scolded... Last week she made me cry.  Isn't it enough that I woke up in the body of an Asian girl with glasses? Does her mother have to treat me so badly?"

 -"Oh, man, I'm so sorry. I hope you figure out how to get back into your bodies soon."

 -"Oh bro, don't tell me about it..."

 -"Anyway, in the meantime... please stop staring at me with those eyes while I eat pizza! I'll lose my appetite and there will be two of us who won't be able to eat it!"

 -"Ok, sorry. But describe it to me later, please! Three months without pizza is agony!"