Mem-Mem: Upon realizing Mem-Mem is a fairy, she immediately becomes interested in him, and they become close friends.
Nagomi Yui: They are close friends due to their shared passion for food. Ran usually calls her "Yui-pyon".
Fuwa Kokone: They are good friends. She calls Kokone by the nickname "Kokopi". Despite initially struggling to befriend Kokone, they both become closer thanks to Yui's help.
Rosemary: They become friends after she became Yum-Yum for the first time. 