The art is brilliant, although I do hope Ruru doesn't cheat on the MC with another guy, girls I don't mind. Since we are on this topic, I'm not sure what's trending on itch these days but a similar story with a demonic love interest in a more modern setting would be great too, maybe a harem story but every girl has yandere-ish traits albeit differently? Makes it interesting as depending on the choices the MC could end up with all, few, only one, or dead in multiple ways.
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Damn, multiple yandere love interests sounds like the VN equivalent of navigating a minefield. Can for sure see how that could be interesting.
I wouldn't say it has too similar of a story, but for a demonic love interest in a modern setting you could take a look at My Demonic Romance, if you haven't already. Fantastic 2D art in that one.
Cheers!