Complex sentence: A character imported from the earlier CLAMP series "Tōkyō Babylon", Subaru is the 13th Head of the Sumeragi Ichimon, a clan of onmyōji.
Split into simpler sentences: A character imported from the earlier CLAMP series "Tōkyō Babylon". He is the 13th Head of the Sumeragi Ichimon, a clan of onmyōji.