I mean, yeah...but is the only one I've seen similar to it. Even doujin artists rarely do these kind of themes, though admittedly more often than normal artists (and I'm not into that whole "make someone into a literal onahole"...makes me sick :s).
Bubble is not pure white, but you cleaned it with pure white. Also you repeated "there" twice in a sentence in 2nd chapter while she's talking in school.