The Signs as Characters from Free!
(This is not based on their actual signs, just on their traits)
Haruka Nanase:
Gemini
Makoto Tachibana:
Libra, Scorpio
Nagisa Hazuki:
Leo, Sagittarius
Rei Ryugazaki:
Virgo
Rin Matsuoka:
Aries, Aquarius
Nitori Aiichirou:
Cancer, Pisces
Sousuke Yamazaki:
Taurus, Capricorn