Infinite Stratos - Orbital (Doujinshi)

[MangaDex]

 

[Kurbo]

As with any harem anime/manga it's much better without the protagonist

 

[Kurbo]

After several years am back, I've found ONE harem manga that works extremely well because of the protagonist, 100 Girlfriends, go read it. Also, slowly but surely Rentarou's family is becoming a polycule, a type of relationship where everyone involved dates each other, which I believe to the be superior form of harem.