"Mayo Chiki!" is a romantic comedy manga series written and illustrated by Hajime Asano, originally serialized in Media Factory's "Monthly Comic Alive." The story centers around Kinjirō Sakamachi, a high school student with a severe gynophobia—an irrational fear of women—caused by years of physical abuse from his younger sister, Kureha, and his mother, who are both martial artists. His condition makes it difficult for him to interact with women without experiencing extreme anxiety or nosebleeds.

Kinjirō's life takes a dramatic turn when he accidentally discovers a shocking secret about Subaru Konoe, the stoic and popular butler of the school's idol, Kanade Suzutsuki. Subaru is actually a girl who has been disguising herself as a male butler to continue serving Kanade, as per the Suzutsuki family's tradition. Kanade, a wealthy and mischievous heiress, blackmails Kinjirō into keeping Subaru's secret, threatening to expose his gynophobia if he reveals the truth. In return, Kanade offers to help Kinjirō overcome his fear of women, setting off a series of comedic and romantic situations.

As the story progresses, Kinjirō becomes entangled in the lives of Subaru and Kanade, as well as other female characters, including his childhood friend Masamune Usami, who harbors feelings for him. The narrative explores themes of identity, gender roles, and personal growth, as Subaru struggles with her dual identity and Kinjirō works to overcome his phobia. The interactions between the characters are marked by humor, misunderstandings, and moments of genuine emotional connection.

The series balances lighthearted comedy with deeper character development, particularly in Subaru's journey of self-acceptance and Kinjirō's gradual progress in confronting his fears. The dynamics between the main characters—Kinjirō, Subaru, Kanade, and Masamune—drive the plot forward, creating a mix of romantic tension and comedic relief. The manga concludes with resolutions to the central conflicts, providing closure to the characters' arcs while maintaining the series' signature blend of humor and heartfelt moments.