Maya Enjyoji is a 16-year-old student at an all-girls high school, defined by a submissive, weak-willed nature that renders her easily influenced and compliant with others' directions. Though academically capable, these traits dominate her social presence, amplifying her vulnerability. Her entanglement with protagonist Shinobu Handa begins during clean-up duty when Maya discovers Shinobu asleep in an unoccupied room. Overcome by infatuation, Maya kisses Shinobu without consent just as Shinobu stirs awake. Confronted later, Maya reacts with extreme distress, apologizing profusely and offering unrestricted compensation. This leads Shinobu to escort Maya to an empty club room for seduction, where Shinobu's companion Kirin encourages Maya's participation, culminating in Maya pledging herself as Shinobu's servant.

Subsequent events chart Maya's significant evolution. Her devotion to Shinobu intensifies, and under Shinobu's influence, she shifts from passivity toward assertiveness. This transformation includes adopting overtly sexual behaviors and developing previously absent perverted aspects. Her journey concludes in a permanent three-way relationship with Shinobu and Momoko Naitou, where Maya maintains bonds with both.

The animated adaptation mirrors this arc. The first OVA depicts Shinobu punishing Maya for the unsanctioned kiss by tormenting her with a vibrator, aided by Kirin. This reinforces Maya's submissive nature and willingness to endure discomfort for Shinobu's attention. Her trajectory remains consistent across media, ending with her integration into the polyamorous relationship without further changes.