Aries:
The determined, optimistic and hot-headed protagonist.
Taurus:
The big brother "sempai" protective sidekick.
Gemini:
The laid-back comic relief pervert.
Cancer:
The stoic, cold character with a tragic romantic history.
Leo:
The boastful, egocentric antagonist with dramatic entrances/exits.
Virgo:
The nervous, obsessive-compulsive character who looks great in glasses.
Libra:
The single guy caught in a harem anime.
Scorpio:
The outwardly playful companion with a secret, sinister agenda revealed in a dark plot twist.
Sagittarius:
The loud-mouthed idiot from Osaka.
Capricorn:
The intense kendo team captain.
Aquarius:
The popular, yet emotionally detached school idol.
Pisces:
The mysterious and shy character with psychic/telepathic abilities.
Yeah, I'm definitely a Gemini.