Naoya Mukai's crazy lifestyle of balancing his time between both of his girlfriends, Saki Saki and Nagisa Minase, is still as hectic as ever. Additionally, the blonde bombshell Rika Hoshizaki also has her sights on Naoya, complicating his already convoluted love life. As if things could not get more ridiculous, another girl inserts herself into the situation: Shino Kiryuu, who is determined to end Naoya's two-timing and ensure Saki's happiness. However, Shino harbors secret feelings for Naoya—a longing she believes she must forsake—yet simply cannot due to the deep attraction he inspires.

Private detective Sousuke Kaburaya is simply trying to make ends meet when Sara da Odin, an imperial princess from another world, falls through a portal right on top of him. Unaware that she is an anomaly in a magicless world, Sara uses powerful spells in public, causing a commotion and forcing Sousuke to take her back home with him. With the help of the internet, manga, and modern Japanese conveniences, Sara grows accustomed to living in Japan and becomes Sousuke's assistant in the process. Meanwhile, Livia de Udis, Sara's personal knight, also comes through the portal but lands at a different location. There, she meets a homeless man who readily accepts her unique background and odd tendencies. Despite her situation, Livia quickly adapts and settles into the homeless lifestyle, a far cry from the noble position she used to hold. While Sara and Livia may be living different lives, their positive and ambitious attitudes leave a lasting impact on the people around them as they experience both the good and bad of Japan.

Sawada Honoka is a 14-year-old girl who is very timid. She easily gets bullied by other classmates. Honoka is a non-believer in God, Angels, and Devils. Though one day, a devil baby was dropped into her room while she was sleeping. What will Honoka believe in now? (Source: PocketScans)

Kou Kitamura and Aoba Tsukishima are often at odds—even though their families happen to be close friends and business partners. Although the only child of a sports shop owner, Kou has never been interested in playing baseball. Despite this, he possesses an impressive batting ability honed by frequent visits to the local baseball batting center run by the Tsukushima family. On the other hand, Aoba loves to play baseball and is a star player with exceptional pitching form. However, these two seemingly complete opposites share something very important to them—Wakaba Tsukishima, Aoba's older sister and Kou's destined sweetheart. Admired by the quarrelsome duo, Wakaba often finds herself the catalyst to their never-ending rivalry. But whether or not they realize that they have more in common than either would care to admit, only time will tell. The game of baseball may just be what the pair needs to ultimately overcome their own personal struggles.