I was rewatching 'Love Ru' recently, and it's kinda fascinating how it both leans hard into harem rom-com tropes and subtly pokes at them sometimes. The accidental-pervert premise is a classic setup, but the show gets mileage from Rito's genuinely good-guy nature preventing him from ever capitalizing on it, which turns the trope from wish-fulfillment into a source of endless, almost slapstick frustration for the girls. You've got all the archetypes – the tsundere Lala, the shy childhood friend Haruna, the aggressive Yami – but they feel like they're arguing about who gets to define the 'proper' relationship, which adds a layer of meta-commentary on the genre's own rules. It's not deep literature, but the sheer density of classic tropes, played mostly straight but with a wink, makes it a comfort-food watch for anyone who knows the genre inside out.
What I find less discussed is how the constant sci-fi/fantasy elements (aliens, magical girls, time-travel) act as a pressure valve. When a standard romantic misunderstanding would stall a normal series, 'Love Ru' just drops in a new girl with a tail or a transformation sequence, resetting the dynamic and keeping the comedic chaos fresh. The romance never really progresses in a conventional sense, but that's almost the point; the show is about the perpetual state of comedic romantic entanglement, not the destination.