Primary

• Petra Leyte In love with Subaru Natsuki
• Petra Leyte Friend of Frederica Baumann

Extended

• Subaru Natsuki Friend of Otto Suwen
• Subaru Natsuki In love with Emilia
• Subaru Natsuki Partner of Beatrice
• Subaru Natsuki Friend of Petra Leyte
• Subaru Natsuki Friend of Reinhard van Astrea
• Subaru Natsuki Rival of Julius Euclius
• Frederica Baumann Friend of Petra Leyte
• Frederica Baumann Older half-sister of Garfiel Tinsel
• Frederica Baumann [s]Older half-sister[/s] of Rafiel Thompson
• Frederica Baumann [s]Older half-sister[/s] of Fred Thompson