Tokyo Babylon

I am still reading the Manga Tokyo Babylon, there are seven books in the series, and I have made it to volume three. The story continues with 16 year-old Subaru, the 13th descendant of the Sumeragi Clan, and a very powerful onmyoji. His twin sister Hokuta development as a character that has some pretty descent skills as well. She is still persistent that Subaru and Sei-chan, the man that has a huge crush on her brother are destined to be together. She goes as far as to call him brother-in-law.