This is PC, right? I did a quick google search and 30 seconds later am none the wiser.
I don't know of many doujin games that aren't for the PC these days.http://www.tasofro.net/dynamarisa/index.html
I went back and forth as too putting a purchase link, but you can purchase it at paletweb.http://www.paletweb.com/selectpage.asp?code=0003921
Full English patch released: http://en.touhouwiki.net/wiki/DynaMarisa
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