The comedy lives in the puns and wordplay, not the premise, a guy joins the wrong club is just permission for the show to wall itself in with otaku references and slapstick timing that actually lands. The first half especially understands that the joke isn't "girls are weird," it's that these specific girls have spent so long inside their own inside jokes that watching them operate is like watching a foreign language become funny. This show is built for people who laugh at wordplay harder than plot, and it knows exactly who it is for those ten episodes.
Noya Itsuki transfers to Ebisugawa High School with one goal: join the Astronomy Club and pursue his passion for the cosmos. On his first day, he stumbles into what he thinks is his club of choice, ready to gaze at stars and study the universe. Instead, he walks straight into the Asstronomy Club, a completely different organization run entirely by female otaku who are anything but traditional club members. Surrounded by girls who are equal parts eccentric, inappropriate, and obsessed with their own niche interests, Itsuki quickly realizes something is off. Yet somehow he keeps showing up, caught between confusion and the strange comfort of belonging somewhere, even if it's the wrong somewhere. What follows is a rapid-fire comedy where Itsuki's attempts to fit in with his new club members create chaos at every turn. Their antics range from absurd to outright bizarre, and his presence only amplifies the madness. School life becomes a whirlwind of misunderstandings and situations he never signed up for.