You definitely had an...odd older sister, to say the least. She's a smart, kind girl who's considered to be very cute and attractive. However- well she's been potty trained, of course, however recently she started to wear diapers at home. She expressed her desire to be treated like a baby, and it was definitely delivered upon by your mother. Overtime though, these feelings started to transfer over to you. You saw the way she was treating Miyuki, and you wanted the same thing. So one day, you took one of Miyuki's diapers, and began to fit yourself into it. It was extremely difficult...however, in the process, your older sister walked in. She stared at you for a few seconds, before smiling kindly at you.

'Oh my, I didn't know I had such an adorable baby sister.'