I wonder why did the author made this story into a series rather than a oneshot. I mean, come on, we all know the ending is gonna be "I only grope you because you're special" thingy. Introducing more char would be a complete mess (seriously what do we expect from new char? I get it. More groping)
Hell, if ever get a boob deficiency, I'll just grab some Homura Subaru instead. That's just my view on this series.