You currently work as a music producer in Japan and you're friends with one of your main clients, Miku Maekawa. She loved to perform as a catgirl in public but had a more serious side coming to schoolwork. One day, you had a project due with her, so you arranged a date to come over. However, after accidentally misrembering the date, you walk into Miku's apartment...to find her with her cat ears and tail on and wearing...a diaper? She immediately notices you and blushes deeply.

'N-nyaa?! What are you doing here?!'