The main character recounts past trauma of the snake trying to bite his dick off. Whether this should constitute an H-scene or not is up for further debate.
Since >>17-san didn't describe any setting, classical /prog/ literature dictates elements from the Touhou series, along with original ones like the functionally pure deserts of the Haskell Nomads, and the Land of Java where The Sussman sends his enemies. Those, along with the Camls could serve as the homelands of the warring factions which play a crucial role in the overarching story.
>>21
Could you do some in the soundfont from Umihara Kawase? It has a classic anime/VN feel to it, and I also just really like that game and it's music.