OVA
Description
Papi is a Harpy, a bird-like liminal being, and the second monster girl to become a homestay resident in Kimihito Kurusu's household. She is petite, with a small frame, feathered wings in place of her arms from around the upper arm, and bird-like legs with talons; when spread, her wings measure about four meters across. Her youthful, childlike appearance is a racial trait of Harpies, since a lighter body makes flight easier, and as a result she is frequently mistaken for a child even though she is an adult of the same age as her fellow resident Miia.

Papi comes from a matriarchal Harpy community in which only females are born. She grew up in an all-female village and longed for male siblings, and when the Interspecies Exchange Program reached her village, she was apparently the only one interested, leaving quietly for Japan without telling her family. Before finding a steady home she had been a habitual runaway, and being assigned to Kimihito's household gave her a stable place to live. She first encountered Kimihito by abducting him, reasoning that taking him along meant she would not be going out alone.

In personality, Papi is cheerful, playful, naive, and warm-hearted. She is absent-minded and extremely forgetful, a trait made more pronounced by her difficulty with complex ideas and her limited vocabulary. She speaks in simple sentences, refers to herself in the third person, and often fails to grasp abstract concepts such as rules or study material. Her forgetfulness has led those around her to describe her colloquially as a birdbrain, and she has even forgotten her biological father. Despite this, she is affectionate and kind, especially toward small creatures: she has rescued the tree spirit Kii, looked after the isolated slime girl Suu, helped human children on several occasions, and carefully tended to chicks. She approaches strangers without shyness and is well liked by the children and shopkeepers in the neighborhood.

Her motivations are largely instinctive. She acts on spontaneous curiosity, a love of freedom, and a desire for connection and companionship, particularly with Kimihito, whom she calls master because she has trouble remembering his name; for her, recognizing his face and voice is enough. Within the household she often acts before thinking and frequently creates trouble through her impulsive behavior, but her openness also highlights the difficulties and rewards of interspecies coexistence. In the story's structure, she represents instinct and freedom set against regulation, and her inability to be fully controlled even within the exchange program's framework illustrates the gap between official rules and daily reality.

Her most significant relationship is with Kimihito, whom she regards with affection and loyalty. She shares notable camaraderie with Miia, her fellow resident, and with Suu, and she has a loving though somewhat complicated relationship with her mother, whom she closely resembles; their interactions are shaped in part by Papi's forgetfulness about her family and her tendency to wander off on her own. Her development across the story involves learning to communicate more effectively and to navigate social situations, and her journey touches on themes of friendship, belonging, and understanding across species, with moments of emotional depth emerging underneath the comedic tone.

As a Harpy, Papi's notable abilities include flight, which she performs with agility and which allows her to carry people by gripping them. Her keen eyesight and sense of smell help her navigate and find things. Because her arms are wings, she has difficulty grasping objects with her hands and typically carries items by holding them with her feet or balancing them on her head. She has pronounced speed and agility, though her control can lapse when she is startled or distracted, and her limited physical strength and tendency to forget things temper her capabilities. She loves flying and singing and enjoys spending time outdoors, frequently visiting parks, riversides, and mountains to play.