Cheng Ke has lost everything. Coming from a privileged background, he now has to search through trash to find his missing possessions. When one of his frustrated outbursts results in him being punched in the face, Cheng Ke finds himself unfortunately acquainted with terrifying gang leader Jiang Yuduo. Circumstances lead to Cheng Ke becoming a tenant at a new apartment—which just so happens to be rented out by Jiang Yuduo. Cheng Ke's inability to complete even the most menial tasks forces him to overly depend on his landlord, and as a result, the two form an indescribable bond. However, there are darker forces at play in the lives of both Cheng Ke and Jiang Yuduo. The two men are haunted by the pasts they left behind, and meanwhile, danger lurks around every corner. With mysterious figures following their every move, gang wars raging in the streets they walk on, and enemies itching to bring them down, Cheng Ke and Jiang Yuduo must always have each other's back.

Aspiring Orange Company Undine Anya Dostoyevskaya feels dejected upon learning that her gondolier mentor, Alice Carroll, is not spending much time with her own mentor, Athena Glory. Athena—the Undine-turned-opera singer—has been attempting to arrange a meeting with Alice, but the latter seems to be avoiding her for unknown reasons. To try and resolve this predicament, Anya calls upon her fellow Undines Ai Aino and Azusa B. McLaren. As the trio works to bring Alice and Athena together, Anya gains a deeper insight into her seniors' feelings, which might just be the key to untangling the uncertainties between them.

It's the last day of the school term in Kamakura Girl's School, and summer is about to begin. Serious but polite 14-year-old Ichika Tachibana is excited to make her summer vacation with her friends a special break to remember! But little does Ichika know that this summer will be more special than she could have ever imagined. While cleaning in an unused school building, Ichika notices an image of an unfamiliar girl in place of her own reflection in a large mirror. Convinced by her friends that she was just seeing things, she is surprised to see the girl in the mirror later that day, holding her lost cell phone. Introducing herself as Manatsu Kuroki, she comes out of the mirror and hands Ichika's phone back—and to Ichika's surprise, the stones on her cell phone charm have changed colors and now allow her to borrow the power of the 12 Djinn that watch over the world. Uta Kata is a tale of a young girl who will realize new things through her interactions with these spirits. As the Djinn show her overwhelming sights, they will soon also bring to her overwhelming thoughts...

Kotarou was pretty much supposed to be your average boy, worried about the pressures of education while enjoying a simple life with his friends. Much to his despair, he one day finds the overly cheerful Misha at his door, asking to be friends out of nowhere. Even more shocking is that Misha is an apprentice angel, yet she does more bad then good. Along with Kotarou's school friends Takashi and Koboshi and the so called devil Shia (once again being able to do more good then bad), the group of friends spend their days getting into all sorts of adventures and troubles.