Iris's Links
Though the two of them initially butt heads, Iris eventually comes to be the person that Amaranth relies on and respects more than anyone else in the world. It's through Iris's influence and dedication to her that Amaranth becomes willing to embrace actually trying to be a good person instead of inflicting her presence on everyone around her. Also Iris is super hot and Amaranth is mega, turbo gay for her, but that goes without saying.