Liones Yelistratova, a pure princess from a small country, enters a school in Hokkaido on a spring day. The school is a specialized educational institution operated by ALCA to train Logicalists, who maintain world peace. Liones enters class S, where she meets many classmates with unique personalities, like Nina. A lively and cute everyday life begins now. (Source: MAL News)

Yumi and the Yamayuri Council have found two new helpers in Kanako and Toko. Unfortunately, their assistance comes with tension, as neither girl is particularly fond of the other and both seem likely candidates to be Yumi's petite soeur. Will either be a good fit for Yumi? As the school year marches on, the work for the Yamayuri Council piles up, and pressure begins to mount for Yumi to make her final decision. (Source: RightStuf)

After reluctantly being dragged to a festival at her parents' rural hometown, Oriko Okko Seki must face her sudden harsh reality: the death of both of her parents in a car accident shortly after they arrive. Now, Okko must live at her grandmother's traditional hot springs inn, which she is surprised to find is occupied by the ghost of a barefoot child. He encourages Okko to follow in her grandmother's footsteps and prepare to inherit the inn. Initially, Okko struggles to keep up with the responsibilities of the inn and the accommodation of guests. However, her parents told her that an inn is welcoming for everyone, and she strives to honor their memory. After discovering a few other spirits around the village, Okko learns that even though her parents are gone, she does not have to be lonely.

Sixteen years after its destruction by a meteor, Graviton City has been rebuilt into a futuristic metropolis. However, this is of little concern to superpowered high school student Eiko Magami, who only cares about her best friend Shiiko Kotobuki and arriving at school on time. Unfortunately, the incredibly intelligent Biko Daitokuji intends to befriend Shiiko, taking Eiko's place as the Shiiko's best friend using any means she can. Biko decides that, to accomplish this, she must defeat Eiko in combat. In order to overcome her super strength and speed, Biko creates a mecha and challenges Eiko in front of their school gate. As the two commence their battle, an extremely large spaceship hovers over Earth, searching for something left behind.