Yozakura Quartet: Hoshi no Umi
Japanese title: 夜桜四重奏 ～ホシノウミ～
Type: OVA
Source: Manga
Episodes: 3
Status: Finished Airing
Aired: Oct 8, 2010 to Nov 9, 2011
Duration: 28 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Tatsunoko Production, Purple Cow Studio Japan
Producers: Kodansha, KMMJ Studios
Genres: Action, Comedy, Fantasy
Themes: Mythology, Urban Fantasy
Demographics: Shounen

An OVA based on the Hoshi no Umi arc of the manga spanning chapters 26-34. 

This arc focuses on Rin Azuma, a Jiang-Shi yokai resident of Sakurashin adjusting to her new life in the city and working for a ramen shop. One day her former friend Zakuro Kurumaki invades Sakurashin to capture Rin and convince her to join her in destroying the city with the other yokai hunters as well as Enjin Hiizumi, the main antagonist of the series. Akina Hiizumi and the other members of the Hiizumi Life Counseling Office take action to save Rin, 'tune' the yokai controlling Zakuro and protect the city.

(Source: ANN)