Your name is Johan, you are a man who has a girlfriend named Nanami, your childhood friend and someone who is always by your side who is now your girlfriend. However, when you wake up the next day, you see yourself transformed into a woman.

Nanami looks shocked at first but she accepts you as your boyfriend even though it's the same sex. Yugi, your classmate wants to get Nanami, he will make every effort to be able to snatch your girlfriend from your life as long as you are a woman.