Hagun Academy[]
Ikki Kurogane[]
Rinna has later shown interest in Ikki after his several victories even offering him a position as her butler, much to Charlotte's dismay.
Akatsuki Academy[]
Sara Bloodlily[]
Both Rinna and Sara are adoptive sisters who're close to one another as the former had gone to watch her match.
Charlotte Cordé[]
Rinna found and offered Charlotte a position as her maid, which caused them to become close to one another to where she referred to the latter as "Charl".
Rebellion[]
Kouzou Kazamatsuri[]
Rinna is shown to care about her father as she joined Akatsuki for him, she and Sara had even stood in front of one of the Three Top Blazers, Abraham Carter to protect him.