Hey, That Guy over There Who Looks Like Me!

"Hey, how did you get into my house?" "What's your home? This is my home!" —————— It wasn't until the two of them checked all their identity information that they finally accepted the fact that another version of themselves appeared in this world, and it was a gender-transformed version! But, are only two people able to detect this, or can everyone detect the abnormality? How should the seemingly peaceful life of the two continue?