Itsuki Noya is a rich young heir who is just starting his school year at Ebisugawa High School. Always fascinated with the stars, he decides to join the school's Astronomy Club. For some reason, however, the club is housed on the basement, and through confusion of kanji, ends up in the "Astronomical Club", an all-girls' otaku club, filled with such an eclectic cast as loudmouthed president Kyouko Todayama, beleaguered fujoshi Hakata Kanamori, stoic Rikei Hiromatsu, kindhearted vice-president Hasumi Ohba, and their adviser... a cat named Omori. Stuck with them (and in women's clothing), Noya must endure the craziness he has stumbled into. Add to that Kyouko's younger sister Izumiko, who also happens to be Itsuki's personal maid and the incredibly tsundere Student Council President Yuka Iseda, and Itsuki will have the time of his life.Ebiten: Kouritsu Ebisugawa Koukou Tenmonbu ("Ebiten: Ebisugawa High School Astronomical Club") is an ongoing 2008 manga series written by SCA-ji and illustrated by Kira Inugami, with a Summer 2012 Anime web adaptation directed by Hideki Okamoto under AIC.The series is currently streaming on Crunchyroll.
- Alternate Character Reading: "Tenmon-bu" can be read as two different sets of kanji — "天文部" ("Astronomy Club") and "天悶部" ("Astronomical Club"), thus the reason Noya accidentally joins an all-girls' otaku club where he intended to join a stargazers' circle.
- Bare Your Midriff: Kanamori in the Sexy Santa Dress.
- Butt Monkey: If someone is going to be harassed and stripped, it's most likely going to be Kanamori.
- Cuteness Proximity: Small things turn Rikei from stoic, into a slightly less stoic fan girl.
- Dragged into Drag: In order to stay in the club, Todayama forces Itsuki to dress in women's clothes.
- Innocent Fanservice Girl: Kanamori due to all the strip searches done to her.
- Late for School: Kanamori invokes this trope after she oversleeps. She also immediately wishes she had a slice of toast in her mouth and hopes to run into a dashing gentleman in the process.
- Parody: From Saint Seiya, to Sailor Moon, this show will mock them.
- Sexy Santa Dress: Kanamori is put in one in episode 2.