No obvious romance that I can remember. The story is mainly a vessel through which visual gags and dick puns are channeled from on high through the pen of the author. So, there are hijinks about his dick doing SOL things like going to school, making friends, that kind of thing. A little teaser if you will: the most recent chapter (26) introduced a very important character to which the titular dick and our protagonist are very attached (but it isn't romantically, to be clear).

Let's just say this manga will keep trying to push forward until they find where the dick jokes aren't good at all