Rinne no Lagrange: Kamogawa Days
English title: Lagrange: The Flower of Rin-ne – Kamogawa Days
Japanese title: 輪廻のラグランジェ 鴨川デイズ
Alternative titles: Flower declaration of your heart: Kamogawa Days, Lag-Rin: Kamogawa Days
Type: OVA
Source: Original
Episodes: 1
Status: Finished Airing
Aired: Jun 23, 2012
Duration: 43 min
Rating: PG-13 - Teens 13 or older
Studios: Xebec
Producers: Production I.G, Bandai Visual, Yomiuri Telecasting, flying DOG
Licensors: VIZ Media
Genres: Action, Comedy, Sci-Fi
Themes: School

As Yoko has her assistant scour the seabed in search of something, Madoka, unable to pilot Midori properly again, returns to Kamogawa to see the New Year in. Upon returning home, Madoka receives New Year's letters from Lan and Muginami, updating her about what's going on in their lives, to which Madoka makes a prompt reply. As the months pass by and Madoka moves up a year in school, Lan and Muginami visit an intergalactic replica of Kamogawa on the tourist planet Polyhedron.

Takes place between seasons 1 and 2.

(Source: Wikipedia)