Total Recommendations: 3
Here you have a variety of charming, unique looking characters in a school and unproductive club setting. The two containing lighthearted comedy with little story progression, but having a fun atmosphere making you smile as you watch.
Yes the genres are completely different, you can expect one to be more intense/dramatic while the other is easy going. But the enjoyment for both of them are roughly the same, the characters have a similar connection with each other plus the main females are adorable.
The scenario is similar where you have a beautiful alien girl pop out of nowhere, falling in love with the main character, only to be rejected. But she doesn't give up and tries her hardest to win his love. Full of comedy, more beautiful alien girls and embarrassing moments. To Love Ru has more episodes (26), and fan service compared to Haiyore Nyaruko-san.