Demon King Ahriman has a problem: his daughter, Doux, loves everyone! Consequently, Ahriman had to halt his invasion of the world in the worry that his daughter's behavior is not one befitting someone of her kind. She loves making friends, helping others, and bringing happiness to all creatures including their enemies, the humans. Ahriman, however, congratulates Doux for her good deeds instead of scolding her. With the help of his aide Jahi, who is assigned as Doux's master, the two try to get rid of her kindhearted nature—so that the Demon King's daughter goes from a cute, adorable, and nice little girl to an inhuman, cruel, and twisted little demon.

To most people around Mizuki Ashiya, her sudden choice to move to Japan from the United States comes as a shock. Her sole reason for the transfer is to attend the same high school as her idol Izumi Sano, who stole her heart after she saw him compete in a high jump competition. However, there is one problem—Sano attends an all-boys school! That does not stop Mizuki, though, as she is committed to getting close to Sano by changing her appearance and demeanor. Mizuki luckily ends up in the same class and dormitory room as Sano, but her ideal plan is shattered when she finds out that he has quit high jump. Nevertheless, Mizuki is determined to learn more about him and rekindle his love for the sport, all while navigating her new life in high school and keeping her true gender hidden.

The story follows Hajime Sekiguchi, a former life insurance salesman who, in a moment of desperation, makes the unexpected leap into the world of hosts. At Club One, Hajime finds himself surrounded by a cast of eccentric personalities: a younger brother type host with 20 years of experience, a former idol specializing in romantic sales tactics, and a hyper-aggressive host obsessed with mobile games. Despite thinking, This isn't a job for anyone with a sane mind, Hajime uses his polished insurance sales skills to attract clients and carve out a surprising niche for himself. (Source: MAL News)

Sequel to Uchuu Senkan Yamato 2205: Aratanaru Tabidachi.