Sora no Otoshimono, Dakara Boku wa, H ga Dekinai. Recommendations
A perverted male protagonist with a female protagonist with supernatural abilities, also surrounded by female characters with abilities as well. Fight scenes. Fanservice... rest is history :)
Want a lighhearted comedy with an "ecchi" male lead. This show is for you then.
Instead of the usual bland and generic male protagonists we get super horny ones with a harem of super powered girls.
Both are really good comedy anime with a pervy main character
sora no otoshimono and dakara boku both are great animes with a girl who appears and the main guy is forced into helping them through their kindness and end up living with said girl. both have a girl who has loved them since childhood and are competing with the new girl, which makes it quite interesting. overall both series are ecchi and have quite a bit of fanservice but for the most part they really make you laugh and enjoy it more than anything else. dakara boku has a more streamlined plot that progresses in a linear fashion, sora no otoshimono takes some side paths