Early review from me.
This is a decent comedy gag comic about a high school boy and his doting stepsister. But up till now, I couldn't seem to find any romantic development here, so I'm a little disappointed since I was looking for a romantic relationship story. But then again, if they're supposed to be couple, I think this manga should have incest tag then, since some mangas have that tag when having step sibling romantic relationship.
Edit: even the latest chapter still has no romantic development, still waiting