Potterverse:
Selene, Nymphadora, Hermione, Daphne, Fleur, Luna, Time
One Piece:
(??), (??), (??) Nami, Nojiko, Robin, Kuina, Hancock, Vivi, Shirahoshi, Hina, Ain, Baby 5, Monet, Rebecca, Yamato, Death
Akame Ga Kill:
Akame, Kurome, Esdeath, Najenda, (??)
Highschool DxD:
Rias, Akeno, Koneko, Kuroka, Xenovia, Grayfia, Sona, Tsubaki, Raynare, Ingvild, Rossweisse, Amaterasu, Gabriel, Tiamat, Ophis
Bleach:
Yoroichi, Orihime, Tatsuki, Rangiku, Nel Tu, Tier Harribel
Yuuna And The Haunted Hotspring:
Yuuna, Chisaki, Sagiri, Oboro, Yaya, Nonko
Total Waifu: 55
(??): are OC characters
PS. Lux won't chase after every girl, that's why I'm trying to keep it to a minimum for every world he visits.