Aiko Nonohara 野々原愛子

The oldest of the three Nonohara sisters, Aiko is someone who her younger sisters (Himeko in particular) look up to a lot. She is very feminine and domesticated, two things that Himeko is desirous of for herself at the beginning of the story, and is commonly thought of to be very beautiful by other characters in the series. She finds love early on in the story.