While most of the characters were rather tropey - which seemed to work perhaps thanks to fantasy elements in the setting? - there's one exception, and that's banter between Kakeru and Sora, which, at least to me, felt surprisingly natural. And maybe that's what makes Sora the best character
As for your complaints towards Sora's route - that's where all-ages version shows its superiority
Unfortunately, I cannot recommend Steam editions without adult patches, since there are parts where they are overly censored (especially the Haruka's chapter). The only "proper" all-ages version is Complete Edition, (available in two physical versions and on DLSite) which unfortunately is untranslated. But if one wants to read -Nine- in Japanese, it's great (and it's in 1080p ) Besides, the epilogue is all-ages only anyway
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As for Damekoi,
Few days ago I finished Kaya's route. I liked it, although it shows that she's just a "side heroine" I have stopped for a moment, because last few days I've been too tired to read, but maybe I'll return to it today.
BTW I again did a quick comparison between the All-ages edition that I'm playing and +18 MangaGamer's version (so far only for Kaya's route). And once again I lean heavily towards all-ages version, even if sometimes it felt a bit too tame (but then, it has +15 rating). I found the replacement scenes added in the PSP version to be much nicer than too-many badly-animated H-scenes from MG's edition. Really, some of those animations looked so bad it's not even funny I was very disappointed to find out that scenes like
were just the replacement scenes, and were completely absent from adult version - they fit the route so well. Also, all-ages edition added very nice post-credits epilogue for Kaya (and I assume for other "side" heroines as well, but will know for sure after finishing them)
It's a pity that all-ages version is available only on low-res PSP though I wish there was PC or PS3 port...