Sora no Iro, Mizu no Iro
English title: Color of Sky, Color of Water
Japanese title: そらのいろ、みずのいろ
Type: OVA
Episodes: 2
Source: Visual novel
Genres: Hentai
Studios: Himajin Planning
Producers: Nihikime no Dozeu
Duration: 28 min per ep
Rating: Rx - Hentai

Asa &amp; Natsume are both in love with Hajime Saisho. Instead of fighting over him, they both promised to share him equally. However, both girls have to leave him by the end of the summer. As the summer days go by, they each spend their precious time with Hajime, while the day of their fated departure draws near.

(Source: ANN)