The Worries, Beginning, and Ending of the Young Third Son
Yakushimaru feels pent up over his past, even having an outburst at Koto. After getting some advice from Yakushimaru's girlfriend, Koto goes on a moped trip with him, explaining how A and Un are like the beginning and the end, reminding Yakushimaru of the words Myoe left him with. He then tells him that the black rabbit she is chasing is most likely his mother, offering to help her find it on the condition that once she does, she would kill him.
Aired 07/11/2013EP 5 - The Worries, Beginning, and Ending of the Young Third Son

Kyousougiga
In Kyoto, nothing changes. No, not that Kyoto, but rather the Mirror Capital Kyoto, the world inside of a painting! Colorful, beautiful, but static, the people of this world live an idyllic, if boring life. That is, until Koto appears, like a wrecking ball slamming into still waters.
Koto's never met her mother, and in search of clues about her missing parent, she winds up in the very place she's supposed to be, yet least expected. What unfolds is a tale of a crazy, mixed-up family, where the father has mysterious powers, the mother is a goddess, and the siblings have an intense rivalry that will finally see its conclusion... even if that conclusion brings about the attention of the Shrine, an organization dedicated to protecting the multiverse.
(Source: Discotek)