Ai no Joou

From ShoujoMagic:
Story 1: The Indigo-Blue Queen ~The Stage Actress Murder Case~
Riko adores the talented stage actress Katzuki Ichie, who is best known for her performance as "The Indigo-blue Queen," a noble woman who is poisoned. However, Ichie is worth more to some people dead than alive, and she's been receiving anonymous death threats. When the curtain falls on the final show of "The Indigo-blue Queen," Ichie dies as the cryptic threats foretold, and everyone -- including Riko -- is suspect...!?

Story 2: Private Room
Shouko and Aiko Kuramochi are sisters who live alone with their father. Their father gets hospitalized and falls in love with a beautiful doctor... Afterwards the doctor moves in with her beautiful son... Inspite of his beauty Yuki is cold and without emotion...