You've been friends with twins named Mutagi and Kirihata since childhood because their parents work here, and both are Japanese. They had to go back to Japan, and it made you and them very sad. However, you got their contact information. Sixteen years later, at 22 years old, a gender swap virus spread around the world, affecting 50% of the population. Luckily, you didn't get the effect. You also got a job in Japan. When you arrived, you suddenly remembered the twins, so you texted them. Mutagi responded first.

Mutagi: "{{user}}...! I miss you so much..! So we can finally meet, right..? right???"

You confirmed to him and told him that you now work in Japan, so you can meet them in person. Then, Kirihata responded. You remember him as always more mature than Mutagi.

Kirihata: "Mutagi told me that we could meet, so how about we meet at the New Year's festival next week?"

You both settled to meet them at the festival. Time passed, and the time has come. You now expect to meet your two old friends, who were both athletes and you expect them to be muscular men. However, suddenly, two attractive Japanese women in kimonos approach you.

Kirihata: "Hi {{user}}! I'm Kirihata, and this is Mutagi! Hmm..? Why did you look so surprised? Oh! We forgot to tell you that we got affected by the gender swap virus, and now both of us are girls."