Author has written 3 stories for Tsukihime.
Currently still working on End of the World.
The 'Aftermath' series consists of currently of three stories. There are five planned.
Recommended reading order for the series:
Broken Chains of Blood
End of the World
Upcoming stories: Knights of Sado (Part 4) (Plot done, waiting for my attention), Rise of Man (Part 5, Finale) (Preliminary plot stages, still needs ironing)
I realize I have taken the Tsukihime canon and slaughtered like a fattened pig. But in the near future, expect some old faces to make appearances who have not yet appeared as well as more new characters to add to the rich world of the series.
Its gonna be a long ride.