Flat-kun

Оригінальне ім’я: フラットくん

A blue mouse with a ribbon on his tail. He is the closest among My Melo's animal friends. Whenever there's trouble, especially a curse created by Kuromi's magic. Flat also has great social skills when it comes to interacting with the opposite gender. With these, he occasionally gives pointers to Kakeru when trying to contact Uta in certain situations.