Sayaka Shimizu, a high school student with vivid blue hair tied in a ponytail adorned with ribbons and warm brown eyes, attends the same grade as Masayuki Mizutani. Her family’s longstanding ties to his led his parents to enlist her as a temporary maid during their absence, a role she redefines with fervor. Interpreting her duties as encompassing both domestic tasks and the fulfillment of imagined romantic or erotic expectations, she persists despite Masayuki’s clear disinterest.

Driven by an obsessive and possessive nature, she engineers intricate situations to force proximity or servitude, weaving fabricated accounts of their relationship to peers that exaggerate physical intimacy. These deceptions escalate sharply when rivalries emerge with other girls, prompting increasingly brazen efforts to dominate Masayuki’s attention.

Her proximity to him originates from familial convenience, yet her relentless pursuit stems from a privately nurtured infatuation verging on fixation. Her actions remain anchored to this dynamic, with no deviation from her singular focus within the established narrative.