As Sōta feels conflicted over his feelings towards Mahiru, Aoi, wanting Hiroomi to give her some attention, tries to obtain information on the blossoming relationships. Later, Popura gets a toothache and takes the day off, having a dream where she becomes a magical girl. Meanwhile, Kirio ends up discovering Aoi, who is revealed to be the sister he was searching for, and is met with resistance when he tries to take her back home.

Souta is given the task of reporting his family's activities to Otouru Minegishi, Kazue's ex-husband and an employee of his mother who has an annoyingly masochistic behavior. The next day, Souta has to deal with poor eyesight after his glasses break because of Aoi punching him with Daisy. while Hiroomi tries to encourage Jun to ask Kyouko out for a drink.

Whilst out shopping for some more cream, Kyōko and Yachiyo end up meeting Otoo's long lost wife, Haruna. As Yachiyo debates whether to tell Kyōko about her, she disappears again. As Yachiyo feels guilty about it, Mahiru learns about Jun's one-sided crush on Yachiyo and starts feeling sorry for him, leading Sōta to believe she has a crush on Jun. With some support from Jun, Yachiyo apologises to Otoo after he returns and cheers up.

Realizing that he and Yachiyo both have the same day off, Jun finally finds the courage to ask her out for drinks. Meanwhile, Yamada devises multiple plans to get Sota to pet her again.

While Sōta remains stressed over the other day's events, Izumi, assuming he had broken up with Popura, tries to set Sōta and Mahiru up with each other, unaware of the actual circumstances between them.

Yachiyo the samurai sword carrying waitress reveals that she started carrying it to ward off bullies back in elementary school. At this time she encounters Kyoko who agrees to act as a body guard in exchange for Yachiyo's lunch. Otou Hyougo, the true restaurant manager, returns to the store after another unsuccessful search for his lost wife. His wife who has the worlds worst sense of direction got lost years ago while out shopping.

Takanashi is visited at work by one his 4 sisters. Hiroomi the assistant cook attempts to blackmail the staff of Wagnaria so that he won't have to work. At the same time it becomes apparent that Satou the head cook has a thing for Yachiyo the head waitress.

Sōta's novelist sister Izumi enters a slump when she assumes he is dating Popura and will stop paying attention to her. She decides to go on a journey where she ends up meeting Mahiru who helps cheer her up. As Sōta looks after Izumi, Nazuna helps out at Wagnaria, which annoys Aoi who believes she is outshining her. After hearing about it, Nazuna puts on an act to make Aoi feel better about herself.

Popura and the others try to think of ways to help Sōta get along better with Kyōko. Wanting to be spoiled in a similar manner to Kyōko, Aoi starts learning how to make parfaits, much to the dismay of Jun. In order to stop Kyōko from eating everything in the store, Hiyoomi tells a white lie which leaves her stunned. When Sōta finds a lost girl, Kyōko is told to look after her, and even avoids taking her food. After the girl is reunited with her mother, Jun gives Kyōko some food as thanks.

Sōta becomes depressed when he discovers Nazuna has grown as tall as him and has Popura act like his little sister for the day. Mahiru becomes jealous of this and works with Hiroomi to try and get Sōta to call her cute. The next day, Kirio comes to Wagnaria to look for his sister, but finds himself coming into conflict with the men, whilst Hiroomi attempts to keep him and Aoi from meeting each other.

Whilst Popuar is pleased to finally reach the report sheet, Sōta is horrified by the thought of her growing taller. Whilst talking about the future, Aoi ends up turning a statement from Popura that she might have to leave Wagnaria some time in the future to a rumour that she is actually quitting, which she spreads to the other staff members. As the staff have their concerns over this, much to the annoyance of Maya the bird, Popura is confused by their weird reactions to her. After Maya helps Popura with her worries, the truth about Aoi's rumour soon comes out.

As Kyōko remains spaced out over the previous day's events, Popura tries to act more reliable to fill in for her, while Mitsuki tests Jun to see how compatible he is with Yachiyo. Meanwhile, Sōta is bewildered over suddenly finding Mahiru to be cute, outright denying Kirio's suggestion that he might be in love with her. While trying to compliment Mahiru on how much she's improved with her anthrophobia, Sōta inadvertently upsets her by suggesting she find someone else to fall in love with.

Staying over at Sōta's house, Aoi explains her backstory about being constantly forced to study by her mother, inevitably pointing out the reason she ran away was because Kirio ate her natto. As the other staff members try to convince Aoi to return home over the next few days, Popura asks Kirio to bring over his mother, Kikuno, who is revealed to have trouble talking with others clearly to the point that her children need a manual to understand her.

With Aoi's situation resolved, Sōta continues to be in denial over his feelings for Mahiru. Meanwhile, having finally learned Yachiyo's birthday, Jun gives her all the presents that he hadn't had the courage to give her before. Later, Aoi gets herself a cellphone, which she attempts to use to communicate with Kikuno, while Popura becomes depressed when she believes she's gotten shorter.

Jun finally works up the courage to confess to Yachiyo, but it doesn't go well and Yachiyo goes into hiding. After managing to find her, Jun gives a direct confession which she finally reciprocates. Afterwards, Kyoko seems to want to stop Yachiyo making parfaits for her, saying she shouldn't be tied down to her, but Jun accepts that Kyoko is a key part of the girl he fell in love with.

Takanashi Souta, lover of all things small, is recruited by his tiny sempai Taneshima Popura to work at the family style restaurant Wagnaria. There he meets his new co-workers and begins to learn about their many quirks.

Takanashi spends some quality time with his four quirky sisters; the boss, the drunk, the writer and the manipulative. Each in their own way is reliant on Takanashi to keep their family in order. White Day has arrived and Takanashi gifts Mahiru a bag of hair pins. This is the first White Day gift she has ever received. Later he runs into her on the street worried that she might attack some random male while walking around he escorts her home. On the way they run into his eldest sister Kazue. Mahiru get flustered and admits to "assaulting" Takanashi on a regular basis.

Otoo returns to Wagnaria once again this time bringing with him a new waitress, Yamada Aoi. Aoi tells a "tragic tale of woe" to which Takanashi responds that she is a liar. Reluctantly he ends up training Aoi in how to be a waitress. As the day progress she tries to assign the various staff members into a fake family structure.

The girls decided to take a trip to the hot springs which will be the first time for Mahiru. Takanashi concerned about the fate of the male guests at the hot springs goes as well. In the end the entire staff ends up going only to be so late that the hot spring is closed by the time they arrive.

Pupura finds out about Takanashis tall sisters and is upset with him for keeping these ideal women from her. As punishment she sets him up to go on a date with Mahiru. An experiment to see how much more man acclimated Mahiru has become concludes that if she can't punch Takanashi she'll kick him in the nuts.

Popura and Jun end up catching colds due to Aoi's clumsiness, so Kyōko calls in two of her juniors, Yohei and Mitsuki Mashiba, twin siblings who don't get along. When Kyōko offers to put someone else in charge of looking after Inami, Sōta becomes upset and falls out with Inami, but Inami soon manages to build up the courage to make up with him.

Mahiru meets a boy calling himself Kirio Yamada, who she believes might be Aoi's brother. As he is able to withstand her punches, Mahiru ends up conversing well with Kirio, who starts developing feelings for her, but Sōta becomes downhearted when he sees the two getting along. He begins acting strangely the next day and ends up bashing his head against the wall, leading him to think he might've become a masochist. Later, Kozue manages to get the waitresses to dress up in animal cosplay.

Jun takes Yachiyo to buy a cellphone, whilst Kozue takes a liking to Yohei. Meanwhile, Mitsuki becomes suspicious of Jun's familiarity with Yachiyo whilst Yamada runs away after Sōta scolds her.

As Popura becomes more aware of the relationships blooming around her, she and Aoi question Otoo about the restaurant's stance on romantic relationships. Later, Minegishi comes to the restaurant to tell Sōta something and gets punched by Mahiru, leading her to feel she hasn't gotten over her androphobia, but Sōta manages to calm her down.

Still dressed as Kotori, Sōta gets some surprisingly sound love advice from Kirio, who instantly sees through his disguise. Meanwhile, Sōta and Jun become curious about how Hiroomi hasn't been snooping into people's businesses lately, only to find he has simply been more secretive about it. Later, Yachiyo tells Popura that she plans to quit Wagnaria to expand her horizons, assigning her as the next chief.