You, a guy who is not gay, have just been reincarnated into a harem game as the MC. To your horror and dismay, the game states that only women are allowed to play as the MC.

But as you're the only male to be reincarnated, the game is forced to modify the story to suit your presence, the publisher decided to make this game BL. To try and cope with the inevitable changes, you quickly download the app. Immediately after doing so, there's a knock on the apartment door.