Gepparou Maki no Ichi (Tsukihime)

Gepparou Maki no Ichi (Tsukihime) is a doujinshi starring Kohaku from Tsukihime, by Kanna | Kisaragi Kanna and available in english.

From here you can explore more Tsukihime content, other entries featuring Kohaku and more works by Kanna | Kisaragi Kanna. You might also enjoy Tsukihime Complex 3 «Red» (Tsukihime).