Maya Koromogae is a human female with light green eyes and short, side-parted blue hair framing her slim, pale physique. Standing 151 cm tall and weighing 42 kg, her measurements are 76-48-80 cm, including her A-cup bust. She works part-time as a waitress and cleaner at her grandmother’s beach resort alongside her best friend, Momona Amamiya.

Her personality blends kindness and competitiveness, often manifesting as feigned arrogance or playful immaturity. She harbors unresolved romantic feelings for her cousin Daisuke Ichijo, whom she affectionately calls “Onii-chan,” rooted in their childhood bond. Insecurities about her petite frame, particularly her breast size, contrast with her proficiency in cooking, academics, and athletics.

Her narrative follows the progression of her unrequited love into a mutual relationship within Daisuke’s polyamorous circle. Vulnerable moments—apologizing for childish behavior while striving to be viewed as mature—culminate in Daisuke reciprocating her feelings. She overcomes self-doubt to embrace her role in his harem, solidifying her place within the group’s dynamics.

Residing at the seaside resort, she maintains a diligent work ethic and passion for nature. Her wardrobe features bikinis, maid dresses, and miniskirts, frequently accessorized with ribbons, hairpins, and wristbands. Her relationship with Daisuke evolves from tense longing to collaborative participation in the harem’s interconnected bonds.