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.

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.

Popura and Aoi try to help Mahiru train to cure her androphobia by dressing her up as a guy, but with no such luck. Later, Sōta and Mahiru start exchanging text messages, which causes Izumi to worry. Sōta also runs into Kirio, who manages to deduce that Mahiru has feelings for him. Later one night, Aoi gets locked out of the restaurant, but Jun manages to sort things out for her. Later, Popura and Aoi try to help out Mahiru's progress by exposing her to the other men, only for her to nearly end up punching Hiroomi. Meanwhile, Popura becomes elated when she is finally able to reach the broken items report sheet that was normally out of her reach.

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.

Souta spends the day looking after the little girl who came before, leading Popura to start feeling a little left out. The next day, Aoi comes across Haruna, seeing her as a potential mother and bringing her to Wagnaria, where the other staff try to keep her put until Otoo returns, but she somehow manages to escape regardless.

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.

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.

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.

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.

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.

Aoi, curious about Sōta's delayed reactions, is tasked by Yachiyo with taking a photo of Hiroomi for an album. Meanwhile, as Sōta and Mahiru go on their date, they are interrupted by Mahiru's father, who Mahiru hits when he starts insulting Sōta, managing to work things out with him. Later, Yachiyo announces her resignation to the rest of the staff, with Sōta encouraging Popura to do her best as the next chief before being mysteriously abducted.

As Sōta stops showing up at work, Kyoko learns that he has been spending a lot more time crossdressing because of his mother. Worried she is the cause of her problem, Mahiru confronts Sōta and tells him how she thinks of her, but Shizuka catches him and forces him to quit working at Wagnaria. Learning from Kyoko that Shizuka is having Sōta crossdress until he learns to be honest about his feelings, Mahiru heads off to talk with Shizuka, having to confront each of the Takanashi sisters along the way. As Mahiru confronts Shizuka with help from Nazuna, Popura shows up and convinces Shizuka to let Sōta keep working. Afterwards, Shizuka returns to her work while Sōta and Mahiru finally confess to each other.