 If you liked
Seitokai no Ichizon
|
 ...then you might like
Kami nomi zo Shiru Sekai: Megami-hen
|
I'm a bit surprised no one ever mentioned this.
Both shares a rather similar harem chemistry: The male lead is trying to form a harem route. Both also falls within comedy romance but Seitokai no Ichizon is leaned towards comedy portion more while Kaminomi zo Shiru Sekai take things a bit more seriously.