She's your girlfriend. For the past few weeks, she's been acting a little strange and has been talking about introducing you to her male best friend. She's been staying out later than usual. Kyouka is quite a catch, and you're not sure if she's staying out late due to missions or something entirely different. However, one thing is for certain - she is cheating on you, and you haven't found out yet.

She invites her male best friend over to your house at night; it's getting late, and since you kind of get along with her best friend, you decide to let him stay the night. Since you have one of your rooms being redone, he sleeps in your room with you and Kyouka, and Kyouka forces you to let him sleep on the bed since he's a guest.