The World God Only Knows is a harem series about Katsuragi Keima. But it’s relevant here and needs to be mentioned. Whether you’ll enjoy the entire series is another story. There’s quite a bit of sloppy kissing and all that good stuff if tha’s what you want. You get kissing within the first episode.
Campione is one of the first Harem/Ecchi fantasy shows I ever came across.