Looking for a very youthful sounding voice here. 

Example of the Japanese voice over: https://www.youtube.com/watch?v=TvHzbRAR_hI

Papi  is a harpy and is the second housemate. 

She is petite and physically appears to be much younger than the other girls, even though she is the same age as they are (harpies have evolved with smaller, slimmer bodies to enable flight).

 She is goodnatured, happy and playful, but she is unfortunately a "birdbrain" with a very short attention span (taken to an extreme as she will sometimes forget anything she was doing after only taking three steps) and even less long-term memory, so she has trouble learning and remembering any kind of rules.

This gives her quite a childlike personality, and she actually enjoys playing with the local children. She has a human body, but halfway down her upper arms they turn into feather-covered wings. Her wings and hair are light blue, and her eyes are brown. Like a bat, she has a free thumb with a claw, so she can to some extent use the wing as a hand, but she always has trouble in maintaining a secure grip. 

However, she has gained considerable skill with the controller for Kimihito's Nintendo Wii; sometimes she gives up and uses the controller with her feet. Her legs start to get covered with light brown scales by mid-thigh and her elongated feet have only three toes that end in rather impressive talons. In spite of her small frame, she's able to get considerable loads airborne—she can carry Kimihito for a decent distance,and even Miia for a short trip.