Because of her family's work, Tsurugi Haruna (voiced by Takao Kanon), who originally lived in a bustling metropolis, moved to the beautiful countryside and entered a school there. Haruna, who was not used to outdoor work, wanted to join the school's handicraft club, but she met a senior named Kuroiwa Yuuki (voiced by Shinohara Yuu) by accident. Under the coercion and inducement of the senior, Haruna finally joined the Seawall Club where Yuuki was. With a carefree personality and extremely developed motor nerves, Hodaka Natsumi (voiced by Kawaida Natsumi), a calm personality and especially good at cooking, Oono Makoto (voiced by Akesaka Satomi), plus Yuuki, the president who is very accustomed to pranking members and has an overly active and jumping mind, Haruna's after-school activities full of laughter and sweat kicked off.