Upon entering high school, Daisuke Goryo seeks a quiet extracurricular group where he can avoid excessive physical exertion and social strain. His search ends abruptly when he stumbles into the secluded clubroom of the Mystery Research Club. The club consists of three idiosyncratic female upperclassmen who urgently require a fourth member to avert mandatory disbandment: Kotone Ohara, an adept hypnotist; Chiaki Kanda, an aspiring stage magician endowed with abnormal physical strength; and Suzu Ninomiya, an intense occultist focused on curses and ritual phenomena.

Before Daisuke can decline, Kotone places him under hypnosis, compelling him to sign the official club registration form. Instead of conducting rigorous academic study, the girls transform Daisuke into a perpetual test subject. Each club meeting subjects him to Kotone's psychological suggestions, Chiaki's physically destructive magic tricks, and Suzu's unnerving curse ceremonies. The club's activities attract frequent scrutiny from Reiko Takahama of the Public Morals Committee and medical oversight from their eccentric advisor, Asahi Kasugano.

Across 379 canonical chapters collected in 20 volumes, the series balances slapstick physical humor with episodic school-life romance. Daisuke adapts to his demanding role as the club's mediator and experimental volunteer, navigating accidental mishaps, summer festivals, school testing cycles, and gradual romantic tension between the members.

What to Expect

The narrative utilizes a short, episodic gag structure that emphasizes rapid escalation and punchy comedic timing. Rather than supernatural battles or high-stakes conflicts, the comedy stems from real-world misunderstandings, psychological hypnosis experiments, failed magic rehearsals, and occult rituals backfiring directly on Daisuke. The pacing remains consistently brisk across all chapters, transitioning into light harem progression and romantic misunderstandings as Daisuke builds trust with each club member.

Who Will Enjoy This

This manga is suited for readers seeking high-spirited school club comedies, surreal slapstick humor, and character-driven harem dynamics. Enthusiasts of Masahiro Anbe's earlier hit Shinryaku! Ika Musume (Squid Girl) as well as classic school comedy manga like D-Frag!, Tejimina Senpai, and Seitokai Yakuindomo will appreciate the interplay between an exasperated straight-man protagonist and eccentric club specialists.