Excellent :) It's actually one of the most enjoyable games I've played in the last few years. It's a mix of TBS (my fav genre) and porn (fav setting :). Also, the writing is surprisingly good, and though I rarely, if ever read stories in games, here I got sucked in and about 2 hours into the game noticed that, although being a game dev, I stopped analyzing the game and am truly enjoying it.
On a personal note, I'm not a fan of fantasy setting in general, so I'd probably like it even more if it were sci-fi, modern, near future, or post-apocalyptic. Though well.. succubus is a fantasy creature and it's the core concept here.
I'm genuinely interested how this game performs commercially after release. As much as I love this game, I fear it might fail simply because TBS is too niche, or that the gfx, though functional and actually quite cute for my liking, won't look "high budget" or "artsy" enough to make your average player pay...
The rect grid is fine with me btw. What I'd probably change if I were the dev on this is make the GUI larger, with bigger buttons for an easier port to mobile. Also, more helpful tips and probably static dialogs to show enemy stats. Right now during the fight it's not really clear how much dmg enemies will take from spells, or the succubus will take from attacks - though this might not be vital since it seems the combat part is about keeping up those heart points and mind controlling/seducing as many mobs as possible.