This is probably the most shamelessly pandering manga I've ever read. It's not even about the ecchi--there's plenty of that out there--it's more about how the characters are written. They do not act like human beings. Their motivations and thought processes don't make any damn sense. They're basically just walking sexual fantasies.
At least To-Love-Ru style trash at least tries to pretend the situations they get into are accidental...