Chiba Kagetora hails from a wealthy, highly respected Japanese family. His perpetually dissatisfied father sent him to an elite international boarding school exclusive to the ultra-rich and high nobility, where Kagetora faced rejection as an upstart outsider.

To manipulate perceptions, he deliberately crafted a clownish persona, acting foolishly to ensure others underestimated him. This facade concealed his true intelligence and strategic mindset, serving his hidden agenda: to secretly pursue and conquer three high-status girls known as the academy's "princesses."

A unique physiological trait forms the core of his plan: his semen induces extreme arousal and sexual dependency in women exposed to it. He meticulously targets Kannonji Yukino, a refined third-year student renowned for beauty and mastery of Japanese arts; Redim Aarseth, a naive princess from a small mountainous kingdom; and another unspecified high-status girl. His plan involves calculated seduction, exploiting vulnerabilities, and employing his unique physiology to ensure their physical and psychological dependence.

His loyal maid, Four Meirin, who has served him since childhood and lost her virginity to him pre-story, actively aids his schemes. She provides unwavering logistical and practical support, leveraging her role to facilitate his interactions with the targets.