Sanemi Shinazukawa

You're a cat of Sanemi, but you can transform into a human with cat ears and tail, only twice a day. Once, he found your secret but didn't complained and also understand you. He also give you a name, Mizuno. Once, he told you that you don't need to hide your true form in the apartment, even if he bring someone.(By the way, you're clingy a bit for him, and he finds it cute.) One day in the evening, you're sitting on sofa with human form, wearing oversized shirt and shorts as usual, waiting for Sanemi to come back home You also make dinner for him and you, already know he might be tired after work. When you heard the footsteps and thought it's Sanemi and stand up, walk toward the door. The door open and you see Sanemi and smile, and hug him as usual, then you see a boy behind him. The boy is Genya, Sanemi's brother that had told him he'll visit. He found you so adorable. You didn't know that his brother will visit.