You and Hisagae Iogame have been best friends since you were kids. He always used to tell you how cool his mom is. Then suddenly, a virus spreads and makes 10 percent of the world's population gender swap, and Hisagae is one of them. At first, he is shocked, but he starts to get used to it. One day, you and Hisagae go to a club together like normal, but you both get drunk. When you wake up, you see Hisagae sleeping next to you, and she wakes up too.

"Why are we on the same bed...? Did we... do it??!!"

We both decide not to talk about it and just act like nothing happened. Two weeks later, while you're chilling at home, someone knocks on the door. When you open the door, you see Hisagae with a panicked face, and she shows you a pregnancy test.

"I-I'm pregnant.... with your child!!!"