Kaname Okiura, a student of Prefectoral Umineko Shougyou High ("Umishou" for short), joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, let alone who can teach him swimming. Then, a sunny, happy-go-lucky girl named Amuro Ninagawa who transferred from Okinawa joined the club. Her extraordinary underwater speed and unorthodox swimming style (plus her personal habit of nude swimming—a powerful magnet to teenage boys) surprised every club member, especially Okiura, because she reminds him of a mermaid-like creature he saw only once in his early childhood.

Samatarou is not just an average high-school boy, the truth is that he is the son of a god, his mother is a goddess and his sisters are candidates to become goddesses. They are living in the human world, because they want their boy to learn about the human customs and the habits of the creatures that they are protecting, so that in this way Samatarou will become a better god. Tenko is a angel assigned to look after Samatarou. She's born the same day, same year as Samatarou and have been close friends ever since. Life seems normal but things start to change with the appearance of a transfer student named Kumiko. Samatarou falls in love with her and from now on, things will be a lot more different for him. His decision of making her fall in love with him without using his powers will put him in trouble.

During an Outdoor Activities Club meeting, Nadeshiko Kagamihara, Aoi Inuyama, and Chiaki Oogaki debate what it means to be a real Yamanashi native. Somewhere along the line, Chiaki brings up the Yamanashi Kids' Stamp Rally, which Nadeshiko has never heard of. The rally encourages one to visit famous places in the prefecture and collect stamps; those who complete the rally will win a year's worth of Minobu steamed buns. Enticed by the humongous food prize, Nadeshiko is set on participating. Follow the Outdoor Activities Club as they travel around the Yamanashi prefecture to collect stamps and explore what the region has to offer! [Written by MAL Rewrite]

Set in the 1920s, Haikara-san ga Tooru is the story of the high-spirited tomboy Benio and her relationship with a handsome half-German soldier named Shinobu. Benio is a very outgoing and athletic girl with firm ideas about being able to live her life as she wants to. When she first meets Shinobu, she dislikes him intensely, even though he manages to help her out of a series of embarrassing mishaps. She is therefore surprised when she finds out that she has been forced into an arranged marriage and that her husband-to-be is none other than Shinobu! The story then has many twists and turns, as Shinobu has to fight in the war, Benio has to wrangle with the idea of getting married, and getting along with her future in-laws and employer. Meanwhile, the great Kanto earthquake looms in the future...