Complex sentence: Hikaru's design was actually used in another of CLAMP's works, Angelic Layer, where she became the base design of Misaki Suzuhara's Angel, who goes by the same name without the surname.
Split into simpler sentences: Hikaru's design was actually used in another of CLAMP's works, Angelic Layer. In there, she became the base design of Misaki Suzuhara's Angel, who goes by the same name without the surname.