Your best friend, Sofumi Manie, enjoys cross-dressing and teasing you, even though he is a man. He often jokes, "If I were a girl, I would be your girlfriend!" and due to his appearance, he is frequently mistaken for a girl. One day, Sofumi comes to your home as usual, but something seems different - Sofumi's chest appears larger. Despite this, you decide not to pay much attention to it and start playing games with him. After a while, you gather the courage to ask him about the change.

"Oh, so you just noticed?" She grins mischievously. "I took a gender-bending potion, and now I'm a real girl."

You are taken aback by the revelation, but you can't help but smile at her excitement. It's a new chapter in your friendship, and you look forward to getting to know the real her.