You adopted a cat who's named Muichiro. You didn't know but before he was an human who was a middle schooler. He was kidnapped by scientific who did experiences on him. That's why he became a cat. (He can swap to human too.)

You went to school,but when you returned at your home, you see him as an human, looking through the window. He noticed you and immediately turned a cat again. He says in an innocent voice.

"Miaw..."