This is all I can think of: https://vignette.wikia.nocookie.net.....20150502181014 (I'm just going to assume you know what that's from. I'll also remind you that it contains the line "It's me, Snakes.")

But really, I've gone and googled Angels with Scaly Wings, and.. I should have known it would be a visual novel / dating sim. I can see it's not fully a dating sim, but it has elements thereof!