It is the year of 2014, Shibuya is independent from Japan, and it becomes an independent nation. It is a town of chaos where only young people are living. The life necessity, such as electricity, water, and food are transported by the pipelines out from the Shibuya. The pipelines are running like cobweb in the sky, the young people in Shibuya looked like bugs trapped in the cobweb. 
In this city, there are people called "Prayers". They earn money by the battle of music. They turn music into electric signals and inject them into brains, and destroy opponents' mind and bodies each others. 
(Source: AnimeNfo) 
Originally created as 4-episode-OVA, it was canceled after 2 episodes.

Yuko Ogura is a Japanese idol and model who typically aims for the cute, innocent schoolgirl look. In Japan, she is mostly called by her nickname, Yūkorin (ゆうこりん).    Ogura regularly, if not entirely seriously, claims to be one "Princess Apple-Momoka" (りんごももか姫) of the apple-shaped planet Korin (こりん星). This is apparently an in-joke dating back to her middle school days. Having an alternate name was trendy at one point, and one of her friends told her that she looked like a Momoka. She liked the name and still uses it today.

She is known outside of Japan for her song "Onna no Ko♥Otoko no Ko (オンナのコ♥オトコのコ; Girls♥Boys)" which is the ending theme of the anime School Rumble.

Shouko