Shinomiya Kyouya is forced to become a new member of the GJ, an unidentified club that dwells in a room of the former building of a certain school. Here he meets the club leader, Mao, a short girl with a big attitude; Mao's younger sister, Megumi, who has the heart of a bipolar angel; Shion, the recognized genius with a lack of common sense, and the always hungry and mysterious Kirara. Time flies with these unique girls around.GJ-bu (Good Job Club) is a Japanese light novel series written by Shin Araki and illustrated by Aruya. It was adapted into an anime as a part of the Winter 2013 Anime season.
Tama happens to be one as well; she is frequently seen eating snacks and sweets, yet she does not seem to gain any weight (she even managed to lose weight despite eating a whole week's worth of cake). Much to Megumi's dismay.
Big Little Sister: Megumi is taller than her sister, Mao. While she's not too bothered by this, the fact that their younger sister Seira is a millimeter shorter annoys her to no end.
Boobs of Steel: Zig-zagged ; averted by Megumi, the bustiest character, who proves to be too gentle-natured to have a hurtful bite and failed beat Kyoro in an arm wrestling contest. Very much played straight by Kirara (the second bustiest), who bites like a tiger and beats Kyoro so badly in the arm wrestling contest he literally lands on his head.
Canada, Eh?: Kirara and her younger sister Geraldine are both Canadian and Geraldine used to live there.
Can Not Spit It Out: Mao and her feelings towards Kyoro. As Megumi says it, 'it's not that she doesn't want to, it's that she can't'.
Covert Pervert: Shion. After Kyoro smuggled the large amount of Shōnen (Demographic) manga and light novels that Mao may or may not stand (see Allegic To Love, above), Shion made a list of books "banned by Mao"—which lists the books Mao shouldn't read for being too intimate, and in the same time one she should read because they're enough intimate.
Oblivious to Love: In the novels Kyoro has a crush on Megumi, but Megumi didn't seem to notice it. On the other hand, in the anime all the girls have some Ship Tease with him, but he didn't notice much, either.
Older Than They Look: Mao is the eldest sibling of Amatsuka family, yet can quite easily pass as an elementary student. She actually exploited this to have Kyoro brings her to a diner to have a children's meal. The novel noted she stopped growing since the fourth grade.
Picky Eater: Kirara, as shown in episode 7, REALLY doesn't like vegetables.
Real Men Hate Sugar: The corollary was used. Kyoro once stated he didn't care for "real coffee" because it was too bitter, and prefers over-swetened canned coffee instead. He was immediately called "little kid" by Mao. On a macroscopic angle Kyoro isn't a "real man" either but a defeatist Nice Guy that the girls found harmless. Hence his occasional Ore-man form when the girls want someone more testosterone poisoned.
Running Gag: Mori spins for Kyoro. Kyoro really likes this. Kyoro is later kicked by jealous club members.
Shion's obsession with commoner's items.
Mao biting Kyoro.
Kyoro's "Ore-Man" mode.
Ship Tease: Happens every episode between Kyoro and the other female characters he interacts with.
The second time Kyoro acts as "Ore Man" resembles JoJo.
In the second episode, Megumi holds the box of a game of Twister. On the cover, there are three girls who look a lot like Rei, Asuka and Mari.
In episode 6, Kyouya's sister was seen reading Detective Doiru, a thinly veiled spoof of Detective Conan.
In episode 9, Tama is reading a light novel. The character portraits from Psycho-Pass are on the front cover with different hair colours.
Spot of Tea: English tea is always served in the clubroom, courtesy of Megumi.
Sheltered Aristocrat: Shion acts like this, but there was a further justification—all her older brothers were all geniuses in one field or the other, so that she in fact doesn't need anything that comes outside of her household—those would be inferior to what is in her house anyway. When you have an blue-cordon class Supreme Chef—or maybe an Supreme Barista as well—preparing your lunch box every day, do you expect you to know what Instant Noodles or Canned Coffee is? She doesn't, but she finds this depressing as well, and wants Kyoro (who is the only person of a lower status in the cast) to actually teach her those common sense.
Spoiled Sweet: Shion, who as noted above is fascinated by lower-class living despite her genius brothers providing everything she could ever need, and Megumi, whose family employs at least two maidservants but who personally enjoys cooking, cleaning, crafting, and serving tea for her friends and is a Friend to All Living Things.
Gets a little more confusing when Tama and the main cast's little sisters start showing up. Granted, said sisters are still easily convinced that Mao is a grade-schooler although they don't look like they're much older.