Rinne no Lagrange: Madoka Kyouno

The sole member of a Jersey Club who often helps out other clubs and people in need and is passionate about her home town of Kamogawa. She has a habit of saying "maru" (meaning 'circle', the kind used to mark tests) when she finishes helping someone. She soon discovers she has the ability to pilot a strange robotic aircraft known as the Vox Aura, which she previously encountered ten years ago when she almost drowned. She names this Vox unit Midori, after its green color.