Students, including Aoi Nishino, take part in class and sports activity at a prestigious high school. Aoi Nishino is a member of the school’s archery club. He practices archery studiously and doesn’t socialize much with the other students. His childhood friend Haruka Seno is also a member of the archery club, but she worries about Aoi Nishino. One day, thunder strikes the school grounds. After that, the ordinary lives of the students changes drastically. Many samurai descend on the school grounds. It appears that the entire school has traveled back in time to the Sengoku period. Making things worse, they realize that they are in the time right before the Battle of Okehazama takes place.

Mei Tachibana is a high school student. Due to a traumatic incident when she was a kid, Mei has been unable to make friends or have boyfriends. By mistake, Mei then injures the most popular male student named Yamato Kurosawa. Somehow, Yamato Kurosawa likes Mei Tachibana and tells everyone unilaterally that Mei is his friend. One day, Yamato Kurosawa saves Mei Tachibana from a stalker by kissing her. From that kiss, their love story begins.

In the dawn of the Meiji period, the Gokumonjou, an inescapable prison, has been established in the middle of an enormous lake to counter the soaring crime rates the new era has brought. Serving as the ferrymen are the famous Kumou brothers: the eccentric family head, Tenka; the reckless but noble second son, Soramaru; and the guileless youngest, Chuutarou. In spite of their grim work, the three lead relatively peaceful lives in the ever-cloudy town of Oumi, together with their housekeeper, Shirasu Kinjou. But buried in the long history of Oumi is the legend of the terrifying “Orochi,” a serpentine beast that awakens every three hundred years in a human vessel. Unbeknownst to Soramaru and Chuutarou, the actual job of the Kumou family is to seal the Orochi away before it fully revives—or the world will be plunged into destruction. Amid the monster’s next resurrection, the Kumou family must find the resolve to keep laughing under the clouds.

After her parents divorced, Shima Sumitomo lived with her mother. She felt uncomfortable living with her stepfather and she was unable to hang out with people at her high school. Shima Sumitomo decides to move to Hokkaido where her father lives. At her new high school in Hokkaido, she meets classmate Gen Tatebayashi and Wao Sakurai. They are the two most popular boys at her school. A principle of her school is that “Gen and Wao are for everyone.” If anyone breaks the rule, that person will be ostracized. Even so, Shima Sumitomo gets closer to Gen and Wao.

Ooejo agricultural high school is located in Hokkaido. Most students are from families involved in agriculture and their dreams are to continue working in agriculture. Meanwhile, Yuugo (Kento Nakajima), who graduated from a prestigious middle school, applied to the Ooejo Agricultural High School just because the school has a dormitory. Yuugo, who grew up in the city, finds himself in an unfamiliar environment at Ooejo Agricultural High School, surrounded by nature and animals. Yuugo is also the only one who doesn’t know what type of career he wants to pursue. Yuugo becomes impatient. He goes through struggles everyday, but he he also gets to know the other students and rural life in general. He begins to grow as a person.