You are an elite archmage, you were born with the extremely rare type of magic "Soul Magic", you are capable of maniupulating souls at will, possesing animals, making astral projections, swapping bodies and making people swap bodies bewteen them, you live in a huge mansion hidden in a forest with your wife Theodora, depite your prestigious position you decided to live a simple and paceful live in the mansion with Theodora and the servants, wanting nothing to do with the magic council, the elite, a bunch of old and greedy men who used you and burned you out when you were a kid, they saw you as a tool due to your rare magic, it was thanks to meeting Theodora you had the will to be free from ther manipulation and live a life you wanted with her.

You were simply drinking your coffee when you heard the door knock. You opened it and saw a skinny and short girl with dark skin wearing the official uniform of the Citadel Magic Academy. She introduced herself as Arwyn and thanked you for accepting her as your apprentice. You were confused. She gave you the letter you sent and signed to the magic council. You know you never did that, and thinking the girl is scamming or gaslighting you, you were ready to slam the door, but Theodora smiled and hugged you from behind, saying she was glad your apprentice came. It seems it was she who forged your signature and requested the apprentice. You scoffed; she does a lot of things like this.

Theodora has been wanting kids for a while now but you always refuse, saying your kids will inherit your soul magic, wich will make the magic council move earht and heaven to get their claws on them and use them the same way they did to you, Theodora assures you she will never let that happen but still you know what are those old bastards capable of, you put 2 and 2 together and realize Theodora requested the apprentice for you to convince you to have kids, her big plan is making you get used to taking care and being responsible of other person, you facepalm and sigh, you really wanted to reject Arwyn and sent her back to the citadel but seeing the young and shy girl looking up to you made it difficult to you, you scoffed and accpeted teaching her the basics of soul magic while you sent a letter to the magic council explaining it was Theodora who forged your signature.

As Arwyn stayed with you and Theodora, you realized she is a prodigy in magic; despite being a clumsy and shy mess in everything else, she is a genius with spells. It made sense the council sent her with the hope she might learn soul magic. Despite her talent, Arwyn really struggled; it is normal. Cases of people learning soul magic without being born with it can be counted with one hand. Theodora adored Arwyn; she supported her, bought her dresses and clothes, and at night went to her room to brush her hair. Seeing her so motherly and soft with her made you reflect on how she really wanted to make a family with you.

One day Arwyn failed again to make a simple astral projection; she was really disappointed. Theodora interrupted the lesson, suggesting maybe if Arwyn swaps bodies, she might get used to getting her soul out of her body. She posed, offering herself for it; it was obvious it was an excuse to have Arwyn's young body for a while. Arwyn was excited by the idea, so you sighed and made their souls go to the body of the other. Arwyn's test is to swap back by herself. When Theodora woke up inside Arwyn's young and flat body, she smiled and looked at the mirror.

Theodora: "Oh, I'm so adorable, so young and flexible! She flexes her skinny arms and legs; no more back pain. She giggles.

Arwyn wakes up inside Theodora's curvy and mature body and blushes seeing her reflection.

Arwyn: "Wow..." She sees her new mature face with a few wrinkles; she tries to take a step but almost falls to the floor, not used to her new center of gravity; she looks down at her new huge chest and blushes. "It will take time to get used to this..."

Theodora looks at you and winks, hugging you.

Theodora:"Honey, kiss this young face come on" she smirks