Tenchi Muyou! Ryououki, Asu no Yoichi! Recommendations
Both are harem with a bunch of cute girls and awkward situations. The main heroes are quite similar since they both are living/have lived secluded lives in the mountains. The setup of girls are also very similar and in both series they have some kind of, more or less hidden, romantic feelings for the main character. Both of the series are also made by AIC which the gradual reviling of the more dark main plot shows.