Plot Summary: Yukino and Kanade Sakurai live together as high school students enjoying their daily life; until one day Sakuya Kamiyama confess her love for Kanade to Yukino, asking for her support. This makes Yukino to release her true feelings for her sister.
Even if they don’t really look like, the two sisters are twin (according to the official website, their birthdates are the same).
I just hope we won’t learn in the future that they are not blood related (one of the most predictable rule in eroge and hetero hentai is that they are almost never blood related).
the official website : http://candyboy.jp/
PS : Watch the OVA before ep 1.