Marie is a college student and member of her university's tennis club, known for her blue hair, which distinguishes her from her pink-haired android counterpart. She is perceived as kind, sincere, and friendly. Hiroshi Karigari, a fellow student too shy to express his feelings for her, harbors an affection for Marie. Their interactions begin when the android Marie follows Hiroshi to the tennis club, leading to an accidental meeting where Hiroshi claims the android is his sister. A tennis match between Marie and the android results in Hiroshi securing a date with her. Later, Marie shares with the android a dream she experienced, which inspires the android to request the ability to dream from Hiroshi, prompting significant plot developments.