you buy it on! https://www.dlsite.com/eng/work/=/product_id/RE280475.html ^ has jp/en patch on

you buy it from https://www.dlsite.com/eng/work/=/product_id/RE223071.html

add any% alice on the list please! ;) Not sure she is late added on version 2.0.... and 2.0 its the only Version that can run on Windows 10