Having read one route of Plain, I would recommend against it - if you're not starved for choice - on account of bad prose and lukewarm plot. For busy vn devs: read the first scene then ditch it; the mode of presentation is interesting, though probably only surprising because VNs put so little effort into it a lot of the time (those versed in Fapanese can try みにくいモジカの子 or something instead).