Ema Hinata is an only child with just her father as family. One day, she discovers that he plans to remarry Miwa Asahina, a successful fashion designer. Although she's happy about having a new home, Ema learns that her step-family will consist of 13 brothers! Despite this, she decides to move into the Sunrise Residence where they live in order to give her father some space. However, as she settles in, Ema realizes that many of her new brothers have feelings for her beyond just familial ones. Each brother wants her attention in a different way, and Ema must decide whether to pursue a relationship with one of them or work towards a happy ending for all.
Idea Factory released two games based on the franchise for the Sony PlayStation Portable. A compilation of short stories that were first featured in Dengeki Girl’s Style and Sylph was also released.
The fifth child in the Asahina family and one of three siblings. He's an actor who specializes in providing voices for characters. Along with his identical twin brother Azusa, he works together in thi...
The ninth child of the Asahina family is a sophomore in college and an athlete who plays basketball. Despite his athleticism, he lacks experience with girls and struggles to interact with them, causin...
Ema Hinata's father, Rintaro Hinata, was a renowned adventurer. When he remarried, she moved in with her new 13 stepbrothers. Despite feeling alone due to her father's job, she now feels happy and sec...
Hikaru is the 4th son of the Asahina family. As a novelist he often cross-dresses to get closer to the minds of criminals....
Third brother out of triplets with Azusa and Tsubaki, 7th son of the Asahina family....
The eleventh child of the Asahina household, this individual possesses both delinquent tendencies and a strong sense of righteousness. Despite their behavior outside of school, they have an unwavering...
Third son of the Asahina family. Hes a monk and constantly calls Ema his cute little sister...
The tenth son of the Asahina family, Iori is a high school senior with an air of regality about him. Despite being well-known in other schools, he remains humble and approachable. When Ema enters the ...
The sixth child in the Asahina family, who along with two other siblings is part of a set of triplets. He shares the same profession as his identical brother Tsubaki, being a voice actor. However, com...
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Ema's pet squirrel has been with her since she was a child, serving as her constant companion despite being alone for most of the time. The squirrel often calls Ema "Chii" and considers her brothers t...