Uru & Eru Harune

Uru and Eru are twins and Aira's younger sisters. They have one known brother, Itsuki, and one episode is devoted to them on their birthday. They are the first characters to meet Chris Kaname and they are also (indirectly) the reason Aira even knows about Prism Shows. Again, I do not know much about how to do those character chart things and I know little about them, so SOMEONE PLEASE FINISH THIS.