Aki Sora: Yume no Naka

Aki and Sora Aoi, who are siblings, have been dating secretly since they professed their affection to one another on a rainy day. Unaware that Sora has other interests, his twin sister Nami decides to get him involved in the school's Fashion Research Club in an effort to get him involved with Kana Sumiya, a classmate of theirs. Nami's acts, though, conceal unpleasant realities. While her intentions seem to be those of a kind sister seeking to assist her brother in finding love, she is actually hiding her own forbidden affections.