Kazuma Hoshino moves to the beautiful countryside to take care of his little brother, Ayumu Hoshino. They ended up staying in a Japanese Inn that their father knows but not being accustomed to the streets of the countryside, they get lost on their way to the Japanese Inn. Moreover, Kazuma gets into a bit of mischief in the mountains...Being in an unfamiliar place, a woman appears before him.

Ui and Hajime are sharing a slice of cheesecake, Hajime reaches to wipe cream off of Ui's cheek. As he does it a flashback of the kiss by stream causes Ui to wake up in surprise.

Kazuma has to keep fighting a misunderstanding. And he feels like someone's watching him from the shadows...

One day, Kazuma runs into a tall beauty, however...

The sports festival arrives and the group participates in a variety of events; Ui wins a sprint, Hina wins the 100m dash, Tsumugi struggles through an obstacle course and Ibuki demonstrates target archery. After a relaxing lunch with Senka and the Nakatsugawas, Kazuma and Ui prepare for the Hikonan Race. Alongside Hina and Koyori, the gang rush to consume thirty bowls of shiruko, catch ten freshwater eels, and continue to the finish in a random costume. Koyori skillfully makes her...

At school the next morning, Kazuma, Ibuki, Ui and Daigo, in preparation for finals, arrange a study group at the inn. After five and a half hours of studying, the group takes a break to bathe and watch the fireflies. The scene reminds Ui of when she was very young and Hajime announced that he was getting married which did not go over well with her. After dinner, the group turns in for the night and Kazuma bumps into Ui on his way back from the bathroom.

With finals over, everyone save for Ibuki and Ayumu plans a trip to Honchou, a nearby metropolis, to celebrate. When the bus service is delayed, they go to an arcade to pass time. Having stayed at school to practice, Ibuki finds it difficult to concentrate with Kazuma on her mind. The group assembles the following week to watch her participate in a nationwide target archery competition; despite making it to the finals, Ibuki is eliminated.

Kazuma calls up each of the group the next morning, inviting them to visit the beach with him the following Wednesday. Everyone agrees, and the gang spends a fun and exciting day playing in the sand and in the water. Madoka takes the opportunity to ask Ui about her relationship with Kazuma, and is relieved to hear that she considers him more of an older brother than a love interest.

On his way back home from a meetup with Daigo, Kazuma sees Hina at the park and as they talk, she collapses from hunger. Kazuma buys her some fast food and she explains that she has run away from home after her most recent fight with her father. Since she is without money or a change of clothing, Kazuma sneaks her into his room at Yorozuyo Inn. Senka discovers them the following morning but agrees to house Hina in exchange for housekeeping.

Having been absent from the shrine at the time, Madoka is brought up to speed about the tug-of-war, and mistakenly believes it to have been a proposal to Hina. Koyori, also home from vacation, visits Madoka and, hearing of the tug-of-war from her, rushes away to find Kazuma. She finds him in the company of the others and confronts him about his apparent proposal, surprising everyone. After Kazuma explains the situation Daigo becomes convinced that Madoka must like Kazuma and recruits the ...

While walking to school together, Daigo reiterates his discontent that Kazuma rejected Madoka. As Kazuma tries to explain otherwise, Madoka happily catches up to them. Ibuki and Ui walk home together after class and Ibuki neutrally warns Ui that unless she confesses to Kazuma soon, someone else might, herself included. That night, as both girls ponder the conversation, Ayumu calls Ui and asks if she will model for him the next day.

Sitting with the boys at breakfast, Senka informs Kazuma that as the winner of the Hikonan Race, he is to play the Ogami in the upcoming festival's Futagoyama ceremony. Though reluctant, he agrees. On his way to school, Daigo encourages him to use the opportunity to get with Tsumugi, the Megami, and by extension, the prettiest girl in town. Ibuki happily catches up to them as Ui bashfully approaches; a silence is drawn between herself and Kazuma.