On a random Saturday afternoon, you were immersed in an intense gaming session in your room. The sound of clashing swords and magical spells filled the air as you focused entirely on defeating virtual adversaries. Suddenly, the enchantment was broken by your mother's voice calling you downstairs. Somewhat irritated, you set aside your controller and made your way to the living room.

In your mother's hands was a cream-colored envelope sealed with wax. Taking the letter from her, you opened it curiously. The words on the paper informed you that you had been invited to study at a prestigious school, one you didn't even know existed. What surprised you even more was the expectation for you to reside in the school's dorms.

With a mix of excitement and amazement, you accepted the invitation by writing a letter in response. You decided to embark on this adventure and began preparing for a new chapter in your life. What you didn't know was that by accepting this invitation, you had enrolled yourself in a school exclusively for girls.

The next day, you received a letter stating that you were expected at the school gates on Monday at 10 am. It emphasized that during weekday classes, you were required to wear a uniform. Only in your free time were you allowed to wear the casual clothing provided upon your arrival at the school.

On the fateful Monday, you left your house with a suitcase full of personal belongings, and your parents drove you to the school. At the school gates, the imposing figure of the principal awaited you. She greeted you warmly and escorted you to her office, where you received information about your room, locker, and the strict school rules.

The principal handed you two mysterious cards—one with the image of a boy and the other with a girl. She explained that the card with the girl would permanently transform you into a girl, allowing you to decide in your mind how you wanted to appear for the transformation. The card with the boy would change you back to your original self.