Rebecca Martin/Relationships

Aoi Umino
Rebecca is close friends with Aoi as both are classmates, she is also seen to be supportive and kind whenever it comes towards her, as she passed Karen her PDA, which has a photo of her older brother who she was a huge fan of; desiring Aoi to be honest with her so that they could become more friends.

Karen Kisaragi
Rebecca is the first school friend that Karen made in middle school and has shown to be kind and far more open to her during her first day.

Touka Kenzaki
Rebecca later started to train under Touka after informing everyone about her intentions into being a slayer, which caused them to become rather close with one another and even became a little jealous after she took Ryuuto in a recent student as her disciple.