A very quiet girl, most likely from her tragic experiences early on in which her father kept her locked up like a bird in a cage after the rest of her family died. As a loner, she has develop a certain relationship with herself through her mirror, by performing certain acts of self gratification by her lonesome. Shintaro helped Rinzu break free of her sorrow by revealing that her father had died trying to save her, instead of actually committing suicide. Rinzu controls the purple Lime, "Nagamasa" (wields a bow, and is displayed as a centaur). Among the girls in her unit she is the only one who willing offered herself to Shintaro, but it was uncertain if the latter has accepted her offer.