As fo now there is no Homestuck Manga in existence.
Dirk Magwitz died on April 15, 2009.
Jaspersprite
Yes, there seems to be evidence from the media and the internet that he was gay.
"Infinity Mechanism"Available on Bandcamp in Homestuck Vol. 8By Thomas "EidolonOrpheus" Ferkol
Dirk Strider kills himself by using the sendificator to send his severed head to Jake, who in turn kisses it and revives him.
Dirk Rijnders died in 2006.
Dirk Hannema died in 1984.
Dirk Valkenburg died in 1721.
Dirk Dirksen died in 2006.
Dirk Stoop died in 1686.
Dirk Lotsy died in 1965.
Dirk Spierenburg died in 2001.
Dirk Crabeth died in 1574.
Dirk Smorenberg died in 1960.
Dirk Schäfer died in 1931.
Dirk Martens died in 1534.