The writing in this game is top tier, absolutely incredible. Out of all the eroges here on itch, this is easily the best.
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It's in depth, but it's also far from perfect. Not to say it's bad, but it's hardly the best. It could certainly be many people's favourite still. In all honestly, there's definitely better, but whether or not they're a better game overall is also another matter.
In the end, both of these are great games.