Never Give Up!(1999)

Never Give Up!

A dad that's a professional model passed on his stunning male looks to his only child, Kiri...but unfortunately, that Kiri is a girl! So Kiri ends up becoming a male model herself somehow. Tohya Enishi is the love of her life, and enters the world of male modeling in order to protect him. But things get really complicated when others start to fall for Kiri and her male alter ego!

(Source: TOKYOPOP)