"Mayo Chiki!" is a romantic comedy manga series written and illustrated by Hajime Asano, based on the light novel series of the same name by Hajime Asano. The story centers around Kinjirō Sakamachi, a high school student with a severe gynophobia—an intense fear of women—due to being raised in a household dominated by his violent younger sister and mother. His life takes an unexpected turn when he accidentally discovers that Subaru Konoe, the popular and stoic butler serving the school's idol, Kanade Suzutsuki, is actually a girl in disguise.

Subaru has been raised as a male butler to serve Kanade, a wealthy and eccentric heiress with a penchant for mischief. To protect Subaru’s secret, Kanade blackmails Kinjirō into keeping quiet, threatening to reveal his gynophobia to the entire school. As Kinjirō becomes entangled in their lives, he begins to form a close bond with Subaru, who struggles with her identity and the societal expectations placed upon her. The series explores their growing relationship, as well as the comedic and emotional challenges they face together.

Other key characters include Kanade Suzutsuki, who harbors her own feelings for Kinjirō and often manipulates situations to her advantage, and Kureha Sakamachi, Kinjirō’s aggressive yet caring younger sister. The narrative delves into themes of identity, gender roles, and personal growth, blending humor with moments of heartfelt introspection. The interactions between the characters drive the plot forward, creating a mix of slapstick comedy, romantic tension, and occasional drama. The series balances its comedic elements with character development, particularly focusing on Kinjirō’s gradual overcoming of his phobia and Subaru’s journey toward self-acceptance.