Summary:

One day, when I returned home, I found an unfamiliar girl standing at my doorstep. After talking with her a bit, I learned she used to be my best friend—a man. Apparently, he was transported to another world, turned into a woman, and has only just managed to return. With nowhere else to go, she ended up living with me for the time being. —Wait a second. Come to think of it, what kind of guy was she before going to the other world? This is the story of a former "Saintess" who returned from another world as a TS girl. The male protagonist is under the influence of brainwashing that makes him believe the TS girl is his best friend. It’s a story about a jaded TS girl who, while being healed by an easygoing male protagonist, gradually opens up and struggles with various emotions. The novel alternates between the perspectives of the male protagonist and the TS girl.