Shiina Aki is constantly being treated like a girl due to his feminine looks so he decides to move to Tokyo to attend middle school in an attempt to change himself. However, what awaits him in his new home, Sunohara-sou, is the kind-hearted caretaker, Sunohara Ayaka. Along with the three female members of Aki's new middle school's student council, Yukimoto Yuzu, Yamanashi Sumire, and Kazami Yuri. And so begins Aki's new life in Tokyo living with four girls.

Licca is in grave danger once she finds out that she is the princess of the Doll Kingdom. Now, the evil Dr. Scarecrow is after her and her throne. So Licca's grandmother gives her a set of dolls. When needed, the dolls will transform into larger versions known as the Doll Knights. Together, they will protect Licca. (Source: AnimeNfo)

OZ, a virtual world connected to the internet, has become extremely popular worldwide as a spot for people to engage in a large variety of activities, such as playing sports or shopping, through avatars created and customized by the user. OZ also possesses a near impenetrable security due to its strong encryption, ensuring that any personal data transmitted through the networks will be kept safe in order to protect those who use it. Because of its convenient applications, the majority of society has become highly dependent on the simulated reality, even going as far as entrusting the system with bringing back the unmanned asteroid explorer, Arawashi. Kenji Koiso is a 17-year-old math genius and part-time OZ moderator who is invited by his crush Natsuki Shinohara on a summer trip. But unbeknownst to him, this adventure requires him to act as her fiancé. Shortly after arriving at Natsuki's family's estate, which is preparing for her great-grandmother's 90th birthday, he receives a strange, coded message on his cell phone from an unknown sender who challenges him to solve it. Kenji is able to crack the code, but little does he know that his math expertise has just put Earth in great danger.

It is said that fireworks can calm the souls of the dead. For Tomoya Sugisaki, Aoi Harukawa, and Ryou Kobayashi, fireworks are what allowed them to meet the Summer Ghost. Believed to be the spirit of a young woman who committed suicide, the Summer Ghost only appears in a specific area and can only be seen by those who are within arm's reach of death. Tomoya is a creative soul being crushed by his academic obligation to get into a good university. Aoi is a meek girl who is relentlessly bullied by her classmates. Ryou is a former basketball star who had to forfeit his passion following a grim diagnosis. The only thing these three have in common is their ability to see the Summer Ghost. The Summer Ghost is said to be able to answer any and all questions pertaining to death—something the three teenagers desperately want to know more about. Dissatisfied with their initial meeting, Tomoya sets out to find the Summer Ghost once again. But the more time he spends with the ghost, the more the mystery surrounding her existence unravels.