This will be updated in the future.
AN: I will update this every time the girl has officially joined the harem.
Akeno Himejima (Volume 1)
Kuroka (Volume 1)
Lavinia Reni (Volume 1)
Koneko Toujou (Shirone) (Volume 2)
Gabriel (Volume 2)
Natsume Minagawa (Volume 2)
Grayfia Lucifuge (Volume 2)
Ingvild Leviathan (Volume 2)
Asia Argento (Volume 3)
Valerie Tepes (Volume 3)
Yasaka (Volume 3)
Ophis (Volume 3)
Serafall Leviathan (Volume 3)
Rossweisse (Volume 4)
Suzaku Himejima (Volume 4)
Rias Gremory (Volume 4)
Shigune Nanadaru (Volume 5)
Momo Hanakai (Volume 5)
Latia Astaroth (Volume 5)
Hephaestus (Volume 5)
Kuisha Abaddon (Volume 5)
Danu (Primordial Irish Goddess) (Volume 5)
Kiyome Abe (Volume 5 - DX Chapter - Life. 5)
Scathach (Volume 6)
Griselda Quarta (Volume 6)
Kurousagi (Volume 6)
Minamoto no Raiko (Volume 6)
Sona Sitri (Volume 6)
Irina Shidou (Volume 6)
Xenovia Quarta (Volume 6)
Cana Cludhmor (Irish Goddess) (Volume 6)
Áine (Irish Goddess) (Volume 6)
Kanami Minagawa (Volume 6)
Aoife Murphy (Volume 7)
Penemue (Volume 7)
Raynare (Volume 7)
Tsubaki Shinra (Volume 7)
Irene Belserion (Great Red) (Volume 7)
Brynhildr (Zelma) (Volume 7)
Grimgerde (Volume 7)
Helmwige (Volume 7)
Ortlinde (Volume 7)
Schwertleite (Volume 7)
Fusae Hirawa (Volume 7)
Artemis (Volume 7)
Lisa Minic (Volume 7)
Vera (Volume 7)
Zhang Mei (Volume 7)
Inaie (Volume 7)